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J2000.0

J2000.0

The J2000.0 epoch is used in astronomy. It is precisely Julian date 2451545.0 TT, or January 1 2000, 12 noon TT. This is equivalent to January 1 2000, 11:59:27.816 TAI or January 1 2000, 11:58:55.816 UTC. Since the right ascension and declination of stars are constantly changing due to precession, (and, for relatively nearby stars due to proper motion), astronomers always specify these with reference to a particular epoch. The earlier epoch that was in standard use was the B1950.0 epoch. When the mean equator and equinox of J2000 are used to define a celestial reference frame, that frame may also be denoted J2000 coordinates or simply J2000, but more properly it is the International Celestial Reference System (ICRS) as referenced below. Use of the "mean" locations means that nutation is averaged out or omitted. Novices are sometimes confused by finding that the Earth's rotational North pole does not point quite at the J2000 celestial pole at the epoch J2000.0; the reason is that the true pole of epoch suffers nutation ("is nutated") away from the mean one. The same differences pertain to the equinox. The "J" in the prefix indicates that it is a Julian epoch, as opposed to a Besselian epoch.

External links

- [http://aa.usno.navy.mil/faq/docs/TT.html What is TT?]
- [http://aa.usno.navy.mil/faq/docs/ICRS_doc.html International Celestial Reference System, or ICRS] Category:Astronomical epochs Category:Julian calendar

Epoch (astronomy)

In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. In the case of celestial coordinates, the position at other times can be computed by taking into account precession and proper motion. In the case of orbital elements, it is necessary to take account of perturbation by other bodies in order to calculate the orbital elements for a different time. The currently used standard epoch is J2000.0, which is January 1, 2000 at 12:00 TT. The prefix "J" indicates that it is a Julian epoch. The previous standard epoch was B1950.0, with the prefix "B" indicating it was a Besselian epoch. Besselian epochs were used before 1984, however Julian epochs are now used.
- The Henry Draper Catalog uses B1900.0
- Constellation boundaries were defined in 1930 along lines of right ascension and declination for the B1875.0 epoch. Epochs for orbital elements are usually given in Terrestrial Time, in several different formats, including:
- Gregorian date with 24-hour time: 2000 Jan. 1, 12:00 TT
- Gregorian date with fractional day: 2000 Jan. 1.5 TT
- Julian Day with fractional day: JDT 2451545.0
- NASA/NORAD's Two-Line Elements format with fractional day: 00001.50000000 Category:Celestial coordinate system

Julian date

The Julian day or Julian day number (JDN) is the number of days that have elapsed since 12 noon Greenwich Mean Time (UT or TT) on Monday, January 1, 4713 BC in the proleptic Julian calendar . That day is counted as Julian day zero. The Julian day system was intended to provide astronomers with a single system of dates that could be used when working with different calendars and to unify different historical chronologies.

Julian Date

The Julian Date (JD) is the Julian day number plus the decimal fraction of the day that has elapsed since noon. Historical Julian Dates were recorded relative to GMT or Ephemeris Time, but the International Astronomical Union now recommends that Julian Dates be specified in Terrestrial Time, and that when necessary to specify Julian Dates using a different time scale, that the time scale used be indicated when required, such as JD(UT1). The fraction of the day is found by converting the number of hours, minutes, and seconds after noon into the equivalent decimal fraction. The term Julian date is also used to refer to:
- Julian calendar dates
- ordinal dates (day-of-year) The use of Julian date to refer to the day-of-year (ordinal date) is usually considered to be incorrect.

Alternatives

- The Heliocentric Julian Day (HJD) is the same as the Julian day, but adjusted to the frame of reference of the Sun, and thus can differ from the Julian day by as much as 8.3 minutes, that being the time it takes the Sun's light to reach Earth. The Julian day is sometimes referred to as the Geocentric Julian Day (GJD) in order to distinguish it from HJD.
- Another version of the Julian day, introduced by Peter Meyer, is the chronological Julian Day (CJD), in which the starting point is set at midnight at the beginning of January 1, 4713 BC (proleptic Julian calendar) local time rather than noon UT. Chronographers found the Julian day concept useful, but they didn't like noon as the starting time. So CJD = JD + 0.5 (in the Greenwich time zone, anyway). Note that JD may use Universal Time (UT) or Terrestrial Time (TT), and so it is the same for all time zones and is independent of Summer Time or Daylight-Saving Time (DST). On the other hand, CJD is not, so it changes with different time zones and takes into account the different local DSTs. Users of CJD sometimes refer to the Julian day as astronomical Julian Day (AJD) to distinguish it from CJD. Because the starting point is so long ago, numbers in the Julian day can be quite large and cumbersome. A more recent starting point is sometimes used, for instance by dropping the leading digits, in order to fit into limited computer memory with an adequate amount of precision.
- The Modified Julian Day (MJD), introduced by the Smithsonian Astrophysical Observatory in 1957 to record the orbit of Sputnik, is defined in terms of the Julian day as follows: ::MJD = JD - 2400000.5 :The offset of 0.5 means that MJD started at midnight at the beginning of November 17, 1858, and that every Modified Julian Day begins and ends at midnight UT or TT.
- The Reduced Julian Day (RJD) is also used by astronomers and counts days from the same day as MJD, but from noon UT or TT, and thus is defined as: : RJD = JD - 2400000
- The Truncated Julian Day (TJD) was introduced by NASA for the space program. TJD began at May 24, 1968. Since TJD exceeded four digits on October 10, 1995, some now count TJD from this date in order to maintain a four-digit number. It can be defined as: ::TJD = JD - 2440000.5 :or ::TJD = (JD - 0.5) mod 10000
- The Dublin Julian Day (DJD) is a count of days from midnight at the beginning of January 1, 1900. The source of the name is unknown. It is used in computer programs, such as Lotus 1-2-3 and Microsoft Excel. In these particular programs, this date is counted as day 1, instead of day 0, because the year 1900 was [http://support.microsoft.com/default.aspx?scid=kb;en-us;214326 erroneously] treated as a leap year.
- The Lilian day number defines day 1 as October 15, 1582, which was the first day of the Gregorian Calendar. It was named for Aloysius Lilius, the principal author of the Gregorian Calendar.
- The ANSI Date defines January 1, 1601 as day 1, and is used as the origin of COBOL integer dates. This epoch is the beginning of the previous 400-year cycle of leap years in the Gregorian Calendar, which ended with the year 2000.
- Rata Die is the epoch used in Calendrical Calculations by Edward M. Reingold and Nachum Dershowitz, where day 1 is January 1, 1, that is, the first day of the Christian or Common Era in the proleptic Gregorian Calendar.

History

The Julian day number is based on the Julian Period proposed by Joseph Scaliger in 1583, at the time of the Gregorian calendar reform, but it is the multiple of three calendar cycles used with the Julian calendar: : 15 (indiction cycle) × 19 (Metonic cycle) × 28 (Solar cycle) = 7980 years Its epoch falls at the last time when all three cycles were in their first year together — Scaliger chose this because it pre-dated all historical dates. Note: although many references say that the "Julian" in "Julian day" refers to Scaliger's father, Julius Scaliger, in the introduction to Book V of his Opus de Emendatione Tempore (Work on the Emendation of Time) he states: "Iulianum vocauimus: quia ad annum Iulianum dumtaxat accomodata est" which translates more or less as "We call this Julian merely because it is accommodated to the Julian year". This "Julian" refers to Julius Caesar, who introduced the Julian calendar in 46 BC. In his book Outlines of Astronomy, first published in 1849, the astronomer John Herschel wrote:

The first year of the current Julian period, or that of which the number in each of the three subordinate cycles is 1, was the year 4713 B.C., and the noon of the 1st of January of that year, for the meridian of Alexandria, is the chronological epoch, to which all historical eras are most readily and intelligibly referred, by computing the number of integer days intervening between that epoch and the noon (for Alexandria) of the day, which is reckoned to be the first of the particular era in question. The meridian of Alexandria is chosen as that to which Ptolemy refers the commencement of the era of Nabonassar, the basis of all his calculations.

Astronomers adopted Herschel's Julian Days in the late 19th century, but using the meridian of Greenwich instead of Alexandria, after the former was made the Prime Meridian by international conference in 1884. This has now become the standard system of Julian days. Julian days are typically used by astronomers to date astronomical observations, thus eliminating the complications resulting from using standard calendar periods like eras, years, months, or weeks. Julian days begin at noon because when Herschel recommended them, the astronomical day began at noon (it did so until 1925). The astronomical day had begun at noon ever since Ptolemy chose to begin the days in his astronomical periods at noon. He chose noon because the transit of the Sun across the observer's meridian occurs at the same apparent time every day of the year, unlike sunrise or sunset, which vary by several hours. Midnight was not even considered because it could not be accurately determined using water clocks. Nevertheless, he double dated most nighttime observations with both Egyptian days beginning at sunrise and Babylonian days beginning at sunset. Thus the astronomical day did not begin at noon to allow all observations of a single night to be in a single day.

Calculation

The Julian day number can be calculated using the following formulas: All divisions (except for JD) are integer divisions, meaning the remainder in the division is discarded. The months January to December are 1 to 12. Astronomical year numbering is used, thus 1 BC is 0, 2 BC is −1, and 4713 BC is −4712.

\begina & = &  \\ \\y & = & year + 4800 - a \\ \\m & = & month + 12a - 3 \\\end

For a date in the Gregorian calendar (at noon):

\beginJDN & = & day +  + 365y +  -  +  - 32045\end

For a date in the Julian calendar (at noon):

\beginJDN & = & day +  + 365y +  - 32083\end

For the full Julian Date, not counting leap seconds (divisions are real numbers):

\beginJD & = & JDN +  +  + \end

So, for example, 1 January 2000 at midday corresponds to JD = 2451545.0 The day of the week can be determined from the Julian day number by calculating it modulo 7, where 0 means Monday.

Other Usages

The Julian Dating system may be the basis of the "Stardate" used in the Television series Star Trek. The character, James T. Kirk, was usually the one to recite the Stardate when an excerpt of his Captain's Log plays at the beginning of many of the episodes. It has since then been replaced by another Stardating system when Star Trek: The Next Generation introduced their own dating system consisting of 5 numbers, however retaining the decimal fraction value of the Julian dating system.

Footnotes

- This equals November 24, 4714 BC in the proleptic Gregorian calendar.

References

- Gordon Moyer, "The Origin of the Julian Day System," Sky and Telescope 61 (April 1981) 311-313.
- Explanatory Supplement to the Astronomical Almanac, edited by P. Kenneth Seidelmann. University Science Books, 1992. ISBN 0935702687

External links

- [http://hermetic.nofadz.com/cal_stud/jdn.htm Article 'Julian Day Numbers'] by Peter Meyer
- [http://aa.usno.navy.mil/data/docs/JulianDate.html U.S. Naval Observatory Julian Date Converter]
- [http://www.nr.com/julian.html Julian Day and Civil Date calculator]
- [http://tycho.usno.navy.mil/mjd.html U.S. Naval Observatory Time Service article]
- [http://visualiseur.bnf.fr/Visualiseur?Destination=Gallica&O=NUMM-94926 Outlines of Astronomy by John Herschel]
- [http://www.iers.org/iers/earth/resolutions/UAI_b1.html International Astronomical Union Resolution 1B: On the Use of Julian Dates]
- [http://emr.cs.iit.edu/home/reingold/calendar-book/Calendrica.html Calendrica]
- [http://isotropic.org/uw/date/ Another Julian Day calculator with conversions to many other calendars] valid from 1 January 100 proleptic Gregorian calendar
- [http://sourceforge.net/projects/solarclock/ Open-source date conversion software] Category:Calendars Category:Celestial mechanics ja:ユリウス通日

January 1

January 1 is the first day of the calendar year in both the Julian and Gregorian calendars. Here a calendar year refers to the order in which the months are displayed, January to December. The first day of the medieval Julian year was usually a day other than January 1. This day was adopted as the first day of the Julian year by all Western European countries except England between about 1450 and 1600. The Gregorian calendar as promulgated in 1582 did not specify that January 1 was to be either New Year's Day or the first day of its numbered year. Although England began its numbered year on March 25 (Lady Day or Annunciation Day), between the 13th century and 1752, January 1 was called New Year's Day, and was, with Christmas and occasionally Twelfth Night, a holiday when gifts were exchanged. 364 days (365 in leap years) remain in the year after this day.

Events

- 45 BC - The Julian calendar first takes effect.
- 404 - Last known gladiator competition in Rome takes place.
- 630 - Prophet Muhammad sets out toward Mecca with the army that will capture it bloodlessly.
- 990 - Kievan Rus' adopts the Julian calendar.
- 1438 - Albert II of Habsburg is crowned King of Hungary.
- 1600 - Scotland begins using the Julian calendar.
- 1651 - Charles II crowned King of Scotland
- 1673 - Regular mail delivery begins between New York and Boston.
- 1700 - Russia begins using the Julian calendar.
- 1707 - John V is crowned King of Portugal
- 1738 - Bouvet Island is discovered by French explorer Jean-Baptiste Charles Bouvet de Lozier.
- 1788 - First edition of The Times of London, previously The Daily Universal Register, is published.
- 1797 - Albany replaces New York City as the capital on New York.
- 1801 - Legislative union of Kingdom of Great Britain and Kingdom of Ireland is completed to form United Kingdom.
- 1801 - The first known asteroid, 1 Ceres, is discovered by Giuseppe Piazzi.
- 1804 - French rule ends in Haiti.
- 1808 - Importation of slaves into the United States is banned.
- 1818 - Mary Shelley's novel Frankenstein, or The Modern Prometheus is published.
- 1855 - London, Ontario is incorporated as a city.
- 1861 - Porfirio Diaz conquers Mexico City.
- 1863 - American Civil War: The Emancipation Proclamation takes effect.
- 1863 - The first claim under the Homestead Act is made by Daniel Freeman for a farm in Nebraska.
- 1880 - Ferdinand de Lesseps begins French construction of the Panama Canal.
- 1887 - Queen Victoria was proclaimed empress of India in Delhi.
- 1892 - Ellis Island opens to begin accepting immigrants to the United States.
- 1893 - Japan begins using the Gregorian calendar.
- 1894 - The Manchester Ship Canal, England, was officially opened to traffic.
- 1898 - New York City annexes land from surrounding counties, creating the City of Greater New York. The four initial boroughs, Manhattan, Brooklyn, Queens, and The Bronx, are joined on January 25th by Staten Island to create the modern city of five boroughs.
- 1899 - Spanish rule ends in Cuba.
- 1901 - Nigeria becomes a British protectorate.
- 1901 - The British colonies of New South Wales, Queensland, Victoria, South Australia and Western Australia federate as the Commonwealth of Australia; Edmund Barton becomes first Prime Minister.
- 1901 - The first official Mummers Parade is held.
- 1902 - The first Rose Bowl game is played in Pasadena, California.
- 1908 - For the first time, a ball is dropped in New York City's Times Square to signify the start of the New Year.
- 1911 - Northern Territory is separated from South Australia and transferred to Commonwealth control.
- 1912 - The Republic of China is established.
- 1916 - German troops abandon Yaoundé and their Kamerun colony to British forces and begin the long march to Spanish Guinea.
- 1934 - Alcatraz Island becomes a U.S. federal prison.
- 1934 - Nazi Germany passes the "Law for the Prevention of Genetically Diseased Offspring".
- 1935 - Bucknell University wins the first Orange Bowl 26-0 over the University of Miami.
- 1937 - Anastasio Somoza becomes President of Nicaragua.
- 1937 - The first Cotton Bowl game is played in Dallas, Texas.
- 1939 - The Vienna New Year's Concert is first held.
- 1942 - The Declaration by the United Nations is signed by twenty-six nations.
- 1948 - British railways are nationalised to form British Rail.
- 1948 - After partition, India declines to pay the agreed share of Rs.550 million in cash balances to Pakistan.
- 1948 - Enrico De Nicola formally becomes President of the Italian Republic, but refuses to be a candidate for the first constitutional election the following May.
- 1949 - UN Cease-fire orders to operate in Kashmir from one minute before midnight. War between India and Pakistan stops accordingly.
- 1956 - The Republic of the Sudan achieves independence from the Egyptian Republic and the United Kingdom of Great Britain and Northern Ireland.
- 1958 - The European Community is established.
- 1959 - Fulgencio Batista, President of the Republic of Cuba, is overthrown by Fidel Castro's forces.
- 1960 - The Republic of Cameroon achieves independence from France and the United Kingdom of Great Britain and Northern Ireland.
- 1962 - Western Samoa achieves independence from New Zealand; its name is changed to the Independent State of Western Samoa.
- 1964 - The Federation of Rhodesia and Nyasaland is divided into the independent republics of Zambia and Malawi, and the British-controlled Rhodesia.
- 1969 - Marien Ngouabi formally becomes the President of the Republic of Congo.
- 1970 - The Unix epoch begins at 00:00:00 UTC.
- 1971 - Cigarette advertisements are banned on American television.
- 1973 - The Kingdom of Denmark, the United Kingdom of Great Britain and Northern Ireland, and the Republic of Ireland are admitted into the European Community.
- 1976 - NBC introduces its new logo: an abstract N, similar to the Nebraska Educational Television Network logo.
- 1978 - Air India Flight 855 Boeing 747 explodes and crashes into the sea off the coast of Bombay, killing 213.
- 1979 - Formal diplomatic relations are established between the People's Republic of China and the United States of America.
- 1981 - The Republic of Greece is admitted into the European Community.
- 1981 - The Republic of Palau achieves self-government; it is not yet independent from the United States of America.
- 1983 - The ARPANET officially changes to using the Internet Protocol, creating the Internet.
- 1984 - AT&T is broken up into twenty-two independent units.
- 1984 - The Sultanate of Brunei becomes independent of the United Kingdom of Great Britain and Northern Ireland.
- 1985 - The Internet's Domain Name System is created.
- 1985 - The first British mobile phone call is made by Ernie Wise to Vodafone.
- 1986 - Aruba becomes independent of Curaçao, though it remains in free association with the Kingdom of the Netherlands.
- 1986 - Spain and Portugal are admitted into the European Community.
- 1988 - The Evangelical Lutheran Church in America comes into existence, creating the largest Lutheran denomination in the United States of America.
- 1993 - Velvet Divorce: Czechoslovakia is divided into the Slovak Republic and the Czech Republic.
- 1993 - A single market within the European Community is introduced.
- 1993 - Pakistan is elected member of the 15-nation UN Security Council.
- 1994 - The Zapatista Army of National Liberation initiates twelve days of armed conflict in the Mexican State of Chiapas.
- 1994 - The North American Free Trade Agreement comes into effect.
- 1995 - The World Trade Organization comes into effect.
- 1995 - The Kingdom of Sweden and the republics of Austria and Finland are admitted into the European Union.
- 1995 - The Conference for Security and Co-operation in Europe becomes the Organization for Security and Co-operation in Europe.
- 1996 - Curaçao gains limited self-government, though it remains within free association with the Kingdom of the Netherlands.
- 1997 - The Republic of Zaïre officially joins the World Trade Organization, as Zaïre.
- 1998 - Smoking is banned in all bars and restaurants in the State of California.
- 1999 - The Euro currency is introduced.
- 2002 - Euro banknotes and coins become legal tender in twelve of the European Union's member states.
- 2002 - The Republic of China officially joins the World Trade Organization, as Chinese Taipei.
- 2002 - The Open Skies mutual surveillance treaty, initially signed in 1992, officially enters into force.
- 2003 - Luís Inácio Lula da Silva becomes president of the Federative Republic of Brazil.
- 2004 - Pervez Musharraf receives a vote of confidence to continue as the President of the Islamic Republic of Pakistan from Parliament and the provincial assemblies.

Births

- 766 - Ali ar-Rida, Shia Imam (d. 818)
- 1431 - Pope Alexander VI (d. 1503)
- 1449 - Lorenzo de Medici, Italian statesman (d. 1492)
- 1484 - Huldrych Zwingli, Swiss Protestant leader (d. 1531)
- 1516 - Margareta Leijonhufvud, queen of Gustav I of Sweden (d. 1551)
- 1557 - Stephen Bocskay, Prince of Transylvania (d. 1606)
- 1600 - Friedrich Spanheim, Dutch theologian (d. 1649)
- 1614 - John Wilkins, English Bishop of Chester (d. 1672)
- 1618 - Bartolomé Esteban Murillo, Spanish painter (d. 1682)
- 1638 - Emperor Go-Sai of Japan (d. 1685)
- 1648 - Elkanah Settle, English writer (d. 1724)
- 1655 - Christian Thomasius, German jurist (d. 1728)
- 1684 - Arnold Drakenborch, Dutch classical scholar (d. 1748)
- 1704 - Soame Jenyns, English writer (d. 1787)
- 1711 - Franz Freiherr von der Trenck, Austrian soldier (d. 1749)
- 1714 - Kristijonas Donelaitis, Lithuanian poet (d. 1780)
- 1735 - Paul Revere, American silversmith and patriot (d. 1818)
- 1750 - Frederick Muhlenberg, first speaker of the United States House of Representatives (d. 1801)
- 1752 - Betsy Ross, American seamstress (d. 1836)
- 1774 - André Marie Constant Duméril, French zoologist (d. 1860)
- 1793 - Francesco Guardi, Italian artist (b. 1712)
- 1823 - Sándor Petőfi, Hungarian poet and revolutionary (d. 1849)
- 1833 - Robert Lawson, New Zealand architect (d. 1902)
- 1839 - Ouida, English writer (d. 1908)
- 1854 - Sir James George Frazer, Scottish anthropologist (d. 1941)
- 1860 - George Washington Carver, American educator, inventor, and botanist (d. 1943)
- 1863 - Pierre de Coubertin, French initiator of the modern Olympic Games (d. 1937)
- 1864 - Alfred Stieglitz, American photographer (d. 1946)
- 1873 - Mariano Azuela, Mexican novelist (d. 1952)
- 1874 - Gustave Whitehead, German-American inventor (d. 1927)
- 1876 - Harriet Brooks, Canadian physicist (d. 1933)
- 1879 - E. M. Forster, English novelist (d. 1970)
- 1887 - Wilhelm Canaris, German admiral (d. 1945)
- 1890 - Anton Melik, Slovenian geographer (d. 1966)
- 1892 - Artur Rodzinski, Croatian conductor (d. 1958)
- 1894 - Satyendra Nath Bose, Indian mathematician (d. 1974)
- 1895 - J. Edgar Hoover, American Federal Bureau of Investigation director (d. 1972)
- 1900 - Xavier Cugat, Catalan-Cuban musician, bandleader (d. 1990)
- 1902 - Buster Nupen, South African cricketer (d. 1977)
- 1904 - Fazal Ilahi Chaudhry, Pakistani politician (d. 1982)
- 1906 - Giovanni D'Anzi, Italian songwriter (d. 1974)
- 1909 - Dana Andrews, American actor (d. 1992)
- 1909 - Barry M. Goldwater, U.S. Senator from Arizona and Presidential candidate (d. 1998)
- 1911 - Hank Greenberg, baseball player (d. 1986)
- 1912 - Kim Philby, British spy (d. 1988)
- 1917 - Jule Gregory Charney, meteorologist (d. 1981)
- 1917 - Albert Mol, Dutch actor (d. 2004)
- 1919 - J. D. Salinger, American novelist
- 1920 - Virgilio Savona, Italian singer and songwriter (Quartetto Cetra)
- 1921 - Isma'il Raji' al-Faruqi, Palestinian-born philosopher and comparative religion scholar (d. 1986)
- 1922 - Rocky Graziano, American boxer (d. 1990)
- 1925 - Stymie Beard, American actor (d. 1981)
- 1927 - Vernon L. Smith, American economist, Nobel Prize laureate
- 1927 - Doak Walker, American football star (d 1998)
- 1928 - Ernest Tidyman, American writer (d. 1984)
- 1933 - Frederick Lowy, Canadian medical educator, ethicist, and university president
- 1933 - Joe Orton, English writer (d. 1967)
- 1940 - Frank Langella American actor
- 1942 - Martin Frost, American politician
- 1942 - Country Joe McDonald, American musician (Country Joe and the Fish)
- 1942 - Gennadi Sarafanov, cosmonaut
- 1943 - Don Novello, American actor, comedian, and writer
- 1945 - Jacky Ickx, Belgian race car driver
- 1946 - Rivelino, Brazilian football player
- 1953 - Greg Carmichael, British guitarist
- 1957 - Luis Guzmán, Puerto Rican actor
- 1958 - Grandmaster Flash, West Indian-born singer
- 1959 - Azali Assoumani, Comorese president
- 1961 - Mark Wingett, British actor
- 1964 - Dedee Pfeiffer, American actress
- 1966 - Embeth Davidtz, American actress
- 1968 - Davor Šuker, Croatian footballer
- 1969 - Verne Troyer - American actor
- 1970 - Gabriel Jarret, American actor
- 1972 - Neve McIntosh, Scottish actress
- 1975 - Joe Cannon, American soccer player
- 1977 - Hasan Salihamidžić, Bosnian footballer
- 1978 - Erica Durance, Canadian actress
- 1978 - Jared Fogle, American calibate
- 1978 - Paramahamsa Sri Nithyananda, Indian spiritual guru
- 1978 - Nina Bott, German actress
- 1979 - Brody Dalle, Australian singer (The Distillers)
- 1979 - Koichi Domoto, Japanese artist
- 1980 - Elin Nordegren, Swedish model
- 1981 - Zsolt Baumgartner, Hungarian race car driver
- 1981 - Abdulkadir Kocak, Turkish boxer
- 1982 - David Nalbandian, Argentinian tennis player
- 1985 - Steve Davis, Irish footballer

Deaths

- 379 - Saint Basil of Caesarea (b. 330)
- 404 - Saint Telemachus
- 874 - Hasan al-Askari, eleventh Shia Imam (b. 846)
- 898 - Odo, Count of Paris (b. 860)
- 1204 - King Haakon III of Norway
- 1384 - King Charles II of Navarre (b. 1332)
- 1515 - King Louis XII of France (b. 1462)
- 1554 - Pedro de Valdivia, Spanish conquistador
- 1559 - Christian III of Denmark and Norway (b. 1503)
- 1560 - Joachim Du Bellay, French poet
- 1617 - Hendrik Goltzius, Dutch painter (b. 1558)
- 1679 - Jan Steen, Dutch painter
- 1716 - William Wycherley, English dramatist
- 1730 - Samuel Sewall, English-born judge (b. 1652)
- 1742 - Peregrine Bertie, 2nd Duke of Ancaster and Kesteven, English statesman (b. 1686)
- 1748 - Johann Bernoulli, Swiss mathematician (b. 1667)
- 1766 - James Francis Edward Stuart, "The Old Pretender" (b. 1688)
- 1782 - Johann Christian Bach, German composer (b. 1735)
- 1789 - Fletcher Norton, 1st Baron Grantley, English politician (b. 1716)
- 1793 - Francesco Guardi, Venetian painter (b. 1712)
- 1800 - Louis-Jean-Marie Daubenton, French naturalist (b. 1716)
- 1817 - Martin Heinrich Klaproth, German chemist (b. 1743)
- 1892 - Roswell B. Mason, Mayor of Chicago (b. 1805)
- 1894 - Heinrich Hertz, German physicist (b. 1857)
- 1933 - Harriet Brooks, Canadian physicist (b. 1876)
- 1944 - Charles Turner, Australian cricketer (b. 1862)
- 1953 - Hank Williams, American singer (b. 1923)
- 1958 - Edward Weston, American photographer (b. 1886)
- 1960 - Margaret Sullavan, American actress (b. 1911)
- 1964 - Bechara El Khoury, President of Lebanon (b. 1890)
- 1972 - Maurice Chevalier, French actor and singer (b. 1888)
- 1981 - Beulah Bondi, American actress (b. 1888)
- 1986 - Alfredo Binda, Italian cyclist (b. 1902)
- 1992 - Grace Hopper, American computer pioneer (b. 1906)
- 1994 - Lord Arthur Espie Porritt, Governor-General of New Zealand (b. 1900)
- 1994 - Cesar Romero, American actor (b. 1907)
- 1995 - Fred West, British serial killer (suicide) (b. 1941)
- 1995 - Eugene Wigner, Hungarian physicist, Nobel Prize laureate (b. 1902)
- 1996 - Arleigh Burke, U.S. admiral (b. 1901)
- 1997 - Townes Van Zandt, American musician (b. 1944)
- 1998 - Helen Wills Moody, American tennis player (b. 1905)
- 2001 - Ray Walston, American actor (b. 1914)
- 2003 - Joe Foss, American politician and fighter pilot (b. 1915)
- 2005 - Shirley Chisholm, first black U.S. Congresswoman (b. 1924)
- 2005 - Hugh John Frederick Lawson, 6th Baron Burnham, British newspaperman and politician (b. 1931)
- 2005 - Bob Matsui, U.S. Congressman (b. 1941)

Holidays and observances

- The seventh day and eighth night of Christmas in Western Christianity.
- Many countries around the world using Gregorian Calendar - New Year's Day; often celebrated at 0:00 with fireworks.
- Catholicism - Holy Day of Obligation Octave of Christmas, Blessed Virgin Mary, Mother of God (New calendar).
- Catholicism - Feast of the Circumcision (Old calendar).
- Catholicism - National Migration Week begins (varying official support by the office of U.S. President, not strictly religious)
- Haiti Independence Day
- Taiwan Founding of Republic of China.
- Sudan Independence Day
- Cuba Liberation Day
- Slovakia: Establishment of Slovak Republic.
- Last day of Kwanzaa
- Vienna New Year's Concert
- Pasadena, California - The Tournament of Roses parade and, traditionally, the Rose Bowl football championship
- World Day for Prayer for Peace

External links

- [http://news.bbc.co.uk/onthisday/hi/dates/stories/january/1 BBC: On This Day] ---- December 31 - January 2 - December 1 - February 1 — listing of all days ko:1월 1일 ms:1 Januari ja:1月1日 simple:January 1 th:1 มกราคม

2000

This article is about the year 2000. For other uses of 2000, see 2000 (number) or 2000 (breakdancing move). 2000 (MM) is a leap year starting on Saturday of the Gregorian calendar. Popular culture also holds the year 2000 as the first year of the 21st century and the 3rd millennium. By strict interpretation of the Gregorian Calendar, however, this distinction falls to the year 2001. This is due to the fact that the first century began with the year 1, and there does not exist a year zero. The first century (or first 100 years AD) was from January 1, in the year one (1 AD) through December 31, in the year one-hundred (100 AD). The second century began on January 1, in the year one-hundred and one (101 AD). The year 2000 is also marked as:
- The International Year for a Culture of Peace.
- The World Mathematical Year. See also Wikipedia's almanac of events for this year.

Events

January

- January 1 - Millennium celebrations take place throughout the world. Y2K passes without the serious, widespread computer failures and malfunctions that had been predicted.
- January 5-January 8 - The 2000 al-Qaida Summit
- January 6 - The last remaining Pyrenean Ibex is found dead.
- January 10 - America On-line announces an agreement to buy Time Warner for $162 billion. This is the largest-ever corporate merger.
- January 11 - the armed wing of Islamic Salvation Front concludes its negotiations with the government for an amnesty and disbands in Algeria.
- January 11 - The trawler Solway Harvester sinks off the Isle of Man.
- January 14 - A United Nations tribunal sentences five Bosnian Croats up to 25 years for the 1993 killing of over 100 Bosnian Muslims in a Bosnian village.
- January 16 - In Sacramento, California a commercial truck carrying evaporated milk is driven into the state capitol building killing the driver.
- January 24 - God's Army, Karen militia group led by twins Johnny and Luther Htoo, take 700 hostages at a Thai hospital near the Burmese border.
- January 30 - St. Louis Rams 23 defeat the Tennessee Titans 16 to win the Super_Bowl_XXXIV
- January 30 - Off the coast of Côte d'Ivoire, Kenya Airways Flight 431 crashes into the Atlantic Ocean, killing 169. Within a day, Alaska Airlines Flight 261 crashes off the California coast into the Pacific Ocean, killing 88.
- January 31 - Dr. Harold Shipman in sentenced to life in prison for murder of at least 15 of his patients out of 365 suspected victims.

February

- February 4 - German extortionist Klaus-Peter Sabotta is jailed for life for attempted murder and extortion in connection with sabotage of German railway lines.
- February 6 - Tarja Halonen is elected the first Finnish female president.
- February 13 - Final original Peanuts comic strip is published.
- February 14 - The spacecraft NEAR Shoemaker entered orbit around asteroid 433 Eros, the first spacecraft to orbit an asteroid.

March

- March 1 - The Constitution of Finland is rewritten.
- March 2 - Hans Blix assumes the position of Executive Chairman of UNMOVIC.
- March 8 - Tokyo train disaster.
- March 9 - FBI arrests suspected purveyor of art forgeries, Ely Sakhai, in New York City.
- March 10 - The NASDAQ Composite Index reaches an all-time high of 5048. ([http://dynamic.nasdaq.com/dynamic/IndexChart.asp?symbol=IXIC&desc=NASDAQ+Composite&sec=nasdaq&site=nasdaq&months=84])
- March 18 - 2000 Taiwanese presidential election: Chen Shui-bian is elected President of the Republic of China (Taiwan).
- March 20 - Jamil Abdullah Al-Amin, a former Black Panther, is captured after gun battle that left a sheriff's deputy dead.
- March 21 - Pope John Paul II began the first office visit by a Roman Catholic pontiff to Israel.
- March 21 - US Supreme Court ruled the goverment lacked authority to regulate tobacco as an addictive drug, throwing out the Clinton administration's main anti-smoking initiative.
- March 26 - Presidential elections in Russia: Vladimir Putin elected President.
- March 30 - America's Cup 2000 retained by Team New Zealand near Auckland. Prada Challenge 2000 lost 0-5 in a "best-of-9".

April

April.]]
- April 1 - Japanese prime minister Keizo Obuchi suffers a stroke and falls into a coma.
- April 3 - United States v. Microsoft: Microsoft is ruled to have violated United States antitrust laws by keeping "an oppressive thumb" on its competitors.
- April 5 - Yoshiro Mori replaces Obuchi as prime minister of Japan.
- April 7 - Attack submarine ex-Trepang completes being recycled.
- April 16 - Tuanku Syed Putra ibni Almarhum Syed Hassan Jamalullail, Raja of Perlis dies after a reign of 55 years. He was the longest reigning monarch in the world since the death of Prince Franz Joseph II of Liechtenstein.
- April 17 - Tuanku Syed Sirajuddin becomes Raja of Perlis.
- April 22 - In a predawn raid, federal agents seize six-year old Elián González from his relatives' home in Miami, Florida and fly him to his Cuban father in Washington, DC ending one of the most publicized custody battles in US history.
- April 25 - The State of Vermont passes HB847, legalizing Civil Unions for same-sex couples.

May

- May 3 - A rare conjunction occurs on the New Moon including all seven of the traditional celestial bodies known from ancient times up until 1781 with the discovery of Uranus. The May 2000 conjunction consisted of: the Sun and Moon, Mercury, Venus, Mars, Jupiter, and Saturn.
- May 3 - Computer pioneer Datapoint Corporation files for Chapter 11 bankruptcy.
- May 12 - The Tate Modern opens in London.
- May 13 - In Enschede a heavy fireworks explosion kills 20 and leaves an entire neighborhood in ruins.
- May 18 - Boo.com collapses due to lack of funds after six months.
- May 25 - Israel withdraws IDF troops from southern Lebanon after 22 years.
- May 28 - The volcano Mount Cameroon erupts.

June

- June 1 - Mark Mendlan, professional wrestler known by his ring name "Kid Gorgeous," is killed while wrestling at a show in New Hampshire.
- June 7 - U.S. District Judge Thomas Penfield Jackson of the 4th circuit ordered the breakup of Microsoft Corp.
- June 10 - The New Jersey Devils defeat the Dallas Stars 4 games to 2 to win the 2000 Stanley Cup Finals.
- June 10 - The 2000 European Football Championship begins, hosted jointly by Belgium and the Netherlands.
- June 21 - Section 28, a law preventing the promotion of homosexuality is repealed by the Scottish Parliament.
- June 23 - Palace Backpackers Hostel fire in Childers, Queensland, Australia, kills 15 people.
- June 30 - During a set of the band Pearl Jam at the Roskilde Festival near Copenhagen, 9 die and 26 are injured in the crowd.

July

July
- July 2 - France beat Italy 2-1 to win the 2000 European Football Championship with a golden goal.
- July 2 - Presidential election of Mexico. Vicente Fox wins the Presidency as candidate of the rightist PAN (National Action Party).
- July 10 - In southern Nigeria, a leaking petroleum pipeline explodes killing about 250 villagers who were scavenging gasoline
- July 10 - Death of Denis O Conor Donn, died 10th July 2000, aged 88; succeded by his son, Desmond as The O Connor Donn
- July 18 - Alex Salmond resigns as the leader of the Scottish National Party
- July 25 - A Concorde carrying Air France Flight 4590 crashes just after takeoff from Paris killing all 109 aboard and 5 on the ground.

August

- August 1 - The Santa Cruz Operation announced that it will sell its Server Software and Services Divisions, as well as UnixWare and OpenServer technologies, to Caldera Systems,Inc.
- August 8 - Confederate submarine H.L. Hunley is raised to the surface after 136 years on the ocean floor.
- August 12 - The Russian submarine Kursk sinks in the Barents Sea, resulting in the deaths of all 118 men on board.
- August 14 - The first comic of Megatokyo goes online. This webcomic will later become one of the most popular comics on the web (in terms of page views) and spawn numerous imitators.
- August 25 - the Emulex hoax - wire services publish fraudulent bad news about Emulex
- August 27 - The Ostankino Tower in Moscow catches fire, three people are killed.

September

- September 5 - Tuvalu joins the United Nations.
- September 6 - In New York City, the United Nations Millennium Summit begins with more than 180 world leaders present.
- September 6 - The last wholly Swedish-owned arms manufacturer, Bofors, is sold to American arms manufacturer United Defense
- September 7–14 - The UK fuel protests take place, with refineries blockaded, and supply to the country's network of petrol stations halted.
- September 8 - Albania officially joins the World Trade Organization.
- September 15 - The 2000 Summer Olympics are opened in Sydney, Australia.
- September 16 - Ukrainian journalist Georgiy Gongadze is last seen alive; this day is taken as the commemoration date of his death.
- September 24 - The American Family Association begins lobbying the U.S. Congress to eradicate the National Endowment for the Arts for funding the controversial book One of the Guys by Robert Clark Young
- September 26 - Anti-globalization protests in Prague (some 15,000 protesters) turned violent during the IMF and World Bank summits.
- September 28 - Ariel Sharon leads several hundred armed Israelis in a visit to the Temple Mount. Palestinian civil disorder increases into the Al-Aqsa Intifada.
- September 29 - The Long Kesh prison in Northern Ireland is closed.

October

- October 2 NBC Today Show expanded it to three hours (7:00–10:00 A.M. Eastern Time/Pacific Time; 6:00–9:00 A.M. Central Time/Mountain Time)
- October 5 - President Slobodan Milošević leaves office after widespread demonstrations throughout Serbia and the withdrawal of Russian support.
- October 11 - 250 million gallons of coal sludge spill in Martin County, Kentucky. Considered a greater environmental disaster than the Exxon Valdez oil spill.
- October 12 - In Aden, Yemen, the USS Cole is badly damaged by two suicide bombers who placed a small boat laden with explosives along-side the United States Navy destroyer, killing 17 crew members and wounding at least 39.
- October 21 15 Arab leaders convened in Cairo, Egypt, for their first summit in four years; the Libyan delegation walked out, angry over signs the summit would stop short of calling for breaking ties with Israel.
- October 22 – Mainichi Shinbun exposes Japanese archeologist Shinichi Fujimura as a fraud; Japanese archaeologists had based their treatises of his findings.
- October 26 - Pakistani authorities announce that their police have found an apparently ancient mummy of a persian princess in the province of Baluchistan. Iran, Pakistan and the Taliban all claim the mummy until Pakistan announces it is a forgery in April 17 2001
- October 31 - Singapore Airlines Flight 006 collides with construction equipment in the Chiang Kai Shek International Airport - 83 dead.
- October 31 - The last Jeremy clone has shut down.

November

November
- November - Iraq disarmament crisis: Iraq rejects new U.N. Security Council weapons inspections proposals
- November 1 - Yugoslavia's new democratic government joined the United Nations after eight years of U.N. ostracism under former strongman Slobodan Milosevic.
- November 3 - Widespread flooding throughout England and Wales after days of heavy rain
- November 4 - President Clinton vetoed a bill that would have criminalized the leaking of government secrets.
- November 7 - U.S. presidential election, 2000: Republican challenger George W. Bush defeats Democrat Vice President Al Gore, but the final outcome is not known for over a month because of disputed votes in Florida.
- November 7 - Criminal gang raids the Millennium Dome to steal The Millennium Star diamond but police surveillance catches them in the act
- November 7 - Hillary Rodham Clinton is elected to the United States Senate, becoming the first First Lady of the United States to win public office
- November 11 - Kaprun disaster, Austria, where 155 skiers and snowboarders die when a cable car catches fire in an alpine tunnel.
- November 13 - Richard C. Duncan presents his paper, "The Peak Of World Oil Production And The Road To The Olduvai Gorge", on the Olduvai theory (about the collapse of the industrial civilization), at the Summit 2000 Pardee Keynote Symposia of the Geological Society of America)
- November 14 - Netscape version 6.0 is launched following two years of open source development creating a stable Mozilla web browser upon which it is based
- November 16 - Bill Clinton becomes the first sitting US President to visit Vietnam
- November 17 - Catastrophical landslide in Log pod Mangartom,Slovenia, kills 7, and causes millions of SIT of damage. It is one of the worst catastrophies in Slovenia in the past 100 years.
- November 17 - Alberto Fujimori is removed from office as president of Peru
- November 27 - Canada - Parliamentary elections - Jean Chrétien re-elected as Prime Minister as Liberal Party increases majority in House of Commons
- November 28 - Ukrainian politician Oleksander Moroz touches off the Cassette Scandal by publicly accusing President Leonid Kuchma of involvement in the murder of journalist Georgiy Gongadze.

December

- December 1 - Mexico - Vicente Fox becomes the first opposition President to take office since Francisco I. Madero in 1911. He wins the Presidency as candidate of the rightist PAN (National Action Party).
- December 28 - U.S. retail giant Montgomery Ward announces it is going out of business after 128 years.
- December 30 - Rizal Day Bombings: A series of bombs explode in various places in Metro Manila, Philippines, within a span of a few hours killing 22 and injuring about a hundred.

Unknown Date

- Limited reintroduction of routinely armed police in the UK for the first time since 1936.
- Scientists at University of Szeged's laboratory were first in the world to produce artificial heredity material.
- Millie I. Webb elected president of Mothers Against Drunk Driving.

Births

- February 23 - Max & Sam Christy, American actors
- March 15- Amy and Emily Walton, English actresses
- April 25 - Jacob & Joshua Rips, American actors
- October 6 - Amanda Pace, American actress
- October 20 - Cooper and Oliver Guynes, American actors
- November 8 - Madison and Marissa Poer, actresses

Deaths

January

- January 2 - Patrick O'Brian, English writer (b. 1914)
- January 15 - Fran Ryan, American actress (b. 1916)
- January 19 - Bettino Craxi, Prime Minister of Italy (b. 1934)
- January 19 - Hedy Lamarr, Austrian actress (b. 1913)

February

- February 9 - Beau Jack, American boxer (b. 1921)
- February 11 - Roger Vadim, French film director (b. 1928)
- February 12 - Jalacy "Screamin' Jay" Hawkins, American musician (b. 1929)
- February 12 - Tom Landry, American football coach (b. 1924)
- February 12 - Charles M. Schulz, American comic strip artist (b. 1921)
- February 23 - Sir Stanley Matthews, English footballer (b. 1915)

April

- April 6 - Habib Bourguiba, President of Tunisia (b. 1903)
- April 16 - Tuanku Syed Putra ibni Almarhum Syed Hassan Jamalullail, King of Malaysia (b. 1920)
- April 25 - David Merrick, American stage producer (b. 1911)
- April 29 - Phạm Văn Ðồng, Prime Minister of Vietnam (b. 1906)

May

- May 11 - Paula Wessely, Austrian actress (b. 1907)
- May 12 - Adam Petty, American race car driver (b. 1980)
- May 14 - Keizo Obuchi, Prime Minister of Japan (b. 1937)
- May 17 - Donald Coggan, Archbishop of Canterbury (b. 1909)
- May 19 - Yevgeny Khrunov, cosmonaut