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Several terms redirect here. For other uses see: 22nd century (disambiguation), 2112 (disambiguation), 2150 (disambiguation), the documentary Earth 2100, the song 2120 South Michigan Avenue, the Marvel Comics location Earth-2122, or the video games Battlefield 2142, Earth 2140 and Earth 2160.
Millennium: 3rd millennium
Decades: 2100s 2110s 2120s 2130s 2140s
2150s 2160s 2170s 2180s 2190s

The 22nd century is a century of the Common Era in accordance with the Gregorian calendar. It is the century following the current 21st century, beginning on January 1, 2101 and ending on December 31, 2200. It is distinct from the century known as the 2100s, which will begin on January 1, 2100 and will end on December 31, 2199.

Technological predictions[edit]

Social predictions[edit]

  • 2160 – Some scientists believe there are people born in 2010 who may still be alive in 2160.[9]
  • According to the UN Population Bureau, life expectancy in 2200 will be around 100 for developed countries and the world population will be about 10.9 billion. However, the UN has warned that these projections could be invalidated by any change and progress in future life extension technology and discoveries, as well as changes in future birthrates.[10]

Biological predictions[edit]

  • By 2100, 12% (about 1250) of the bird species existing at the beginning of the 21st century are expected to be extinct or threatened with extinction.[11]
  • By 2100, emperor penguins could be pushed to the brink of extinction due to global climate change, according to a Woods Hole Oceanographic Institution study from January 2009. The study applied mathematical models to predict how the loss of sea ice from climate warming would affect an Antarctica colony of emperor penguins, they forecast a decline of 50% by the end of the century.[12]

Calendric predictions[edit]

  • On March 14, 2100 (which will be February 29, 2100 in the Julian calendar), the difference between the Julian calendar and the Gregorian calendar reaches 14 days. Since 14 is divisible by 7, this will be the first time in history since its inception that the Gregorian calendar will have the same day of the week for each day of the month for the whole year as the Julian calendar. This will last until February 28, 2200 of the Gregorian Calendar.
  • 2100 will not be a leap year since it qualifies as a year that is divisible by 100, but not by 400.
  • FAT file systems theoretically support dates up to December 31, 2107 (though officially only up to December 31, 2099).
  • The Year type in MySQL supports dates up to December 31, 2155.
  • March 17, 2160 – Unless changes are made as to when Easter can be observed, this particular March 17 will fall within Holy Week for the first time since 2008 and fall on the same day (Monday) as it did in that year, likely requiring the movement of the Feast of Saint Patrick's Day to another date.[13]

Time capsules[edit]

  • April 27, 2109 – A time capsule placed under the floor boards of the Old Queens Building at Rutgers University, in New Jersey, United States buried on April 27, 2009 is scheduled to be opened.[14]
  • September 19, 2110 – A time capsule at the Plaza de Armas in Santiago, Chile is intended to be opened on that date. It was buried in 2010.
  • November 18, 2112 – The City of Beaumont, California in the United States will open their time capsule in honor of its Bi-Centennial.
  • 2112 - A time capsule buried in Weavers Academy, Wellingborough, UK, will be opened after 100 years of being buried.
  • August 4, 2113 - The alternate reality game associated with the video game Trials Evolution is scheluded to be concluded.
  • 2132 – A time capsule on Rideau Street in Ottawa, Ontario, Canada is intended to be opened that year. It was buried in 1982.
  • 2193: A time capsule at the York Civic Centre in Toronto, Ontario, Canada is intended to be opened that year.[15] It was buried in 1997.

Astronomical predictions[edit]

Solar eclipses[edit]

Lunar eclipses[edit]

  • June 9, 2123: Long-duration lunar eclipse of approximately 106.1 minutes.[28]
  • June 19, 2141: Long-duration lunar eclipse of about 106.1 minutes. This lunar eclipse is in the same Saros series (132) as the long lunar eclipse in 2123, and has an almost identical duration.[28]

Triple conjunctions[edit]

Transits and occultations[edit]

Other phenomena[edit]

  • 2100: Polaris appears furthest north. Polaris' maximum apparent declination (taking account of nutation and aberration) will be 0.4526° from the celestial north pole, on 24 March 2100.[35]
  • August, 2113: First time Pluto reaches aphelion since its discovery.[36]
  • 2114: Sedna will overtake Eris as the farthest currently known spheroid orbiting the Sun.[37]
  • March 10, 2130: At 07:32 UTC, Sun passes through solar system barycenter.[38]
  • 2134: Comet Halley will return to the inner solar system.[39]
  • 2135–2136: Halley´s comet will be at perihelion.[39][dead link]
  • August 5, 2150: Main-belt asteroid 78 Diana (~125 km in diameter) will pass about 0.003 AU (450,000 km; 280,000 mi) from Earth threatening asteroid (29075) 1950 DA and perturb 1950 DA's long-term trajectory.[40]
  • May 19, 2161: All eight planets are predicted to be on the same side of the sun, within 69 degrees.[41]
  • 2174: The second full orbit of Neptune around the Sun since its discovery in 1846.
  • 2177: "First Plutonian anniversary" of the dwarf planet's discovery, given that Pluto's orbit is just under 248 Earth years.
  • 2182: With an estimated probability of 0.07%, Apollo asteroid 1999 RQ36 could hit the Earth.

See also[edit]


  1. ^ Enoch, Nick (February 29, 2012). "World's oldest nuclear power station closes... but it will take 90 more years and £954m to clear it completely". Daily Mail (London). Retrieved 29 February 2012. 
  2. ^ New Mega-City Challenge – Concept. Geekwidget (2010-03-29). Retrieved on 2014-01-19.
  3. ^ city in pyramid on YouTube
  4. ^ "Stanford to host 100-year study on artificial intelligence". Stanford University. 16 December 2014. Retrieved 19 December 2014. 
  5. ^ "Study to Examine Effects of Artificial Intelligence". The New York Times. 15 December 2014. Retrieved 19 December 2014. 
  6. ^ "One-Hundred Year Study of Artificial Intelligence: Reflections and Framing". Eric Horvitz. 2014. Retrieved 19 December 2014. 
  7. ^ Wall, Mike (2012-05-11). "Dead Satellite Envisat May Be Space Junk for 150 Years". Huffington Post (Huffington Post). Retrieved 2012-05-13. 
  8. ^ Kaku, Michio (April 26, 2004). "How Advanced Could They Be?". Astrobiology Magazine. Retrieved January 7, 2010. 
  9. ^ Laurance, Jeremy (2010-05-12). "Has the elixir of youth come of age?". The Independent (London: The Independent). Archived from the original on 15 May 2010. Retrieved 2010-05-15. 
  10. ^ World population in 2300. (PDF) . Retrieved on 2014-01-19.
  11. ^ Pimm, Stuart; et al. (2006). "Human impacts on the rates of recent, present, and future bird extinctions". PNAS 103 (29): 10941–10946. Bibcode:2006PNAS..10310941P. doi:10.1073/pnas.0604181103. PMC 1544153. PMID 16829570. 
  12. ^ Dunham, Will. "Melting Sea Ice May Doom Emperor Penguins, Study Finds". The Washington Post. Retrieved January 26, 2008. 
  13. ^ Nevans-Pederson, Mary (2008-03-13). "No St. Pat's Day Mass allowed in Holy Week". Dubuque Telegraph Herald. Woodward Communications, Inc. Archived from the original on 5 April 2008. Retrieved 2008-03-13. 
  14. ^ Diduch, Mary (April 27, 2009). "U. celebrates Old Queens bicentennial". The Daily Targum (Rutgers University: College Media Network). Retrieved June 16, 2009. At the ceremony, a time capsule was revealed containing several items from today to leave for the University in 2109, at the building’s tricentennial commemoration. 
  15. ^ York Civic Centre. Freebase (2006-10-23). Retrieved on 2014-01-19.
  16. ^ Eclipse of December 8, 2113. NASA
  17. ^ Eclipse of June 3, 2114. NASA
  18. ^ Eclipse of December 19, 2131. NASA
  19. ^ Eclipse of June 13, 2132. NASA
  20. ^ Eclipse of December 30, 2149. NASA
  21. ^ Eclipse of June 25, 2150. NASA
  22. ^ Solar eclipse of June 30, 1973
  23. ^ Eclipse of January 10, 2168. NASA
  24. ^ Eclipse of July 5, 2168. NASA
  25. ^ Eclipse of January 20, 2186. NASA
  26. ^ Eclipse of July 16, 2186. NASA
  27. ^ Ten Millennium Catalog of Long Solar Eclipses. NASA
  28. ^ a b NASA Eclipse web site. Eclipse.gsfc.nasa.gov. Retrieved on 2014-01-19. Cite error: Invalid <ref> tag; name "eclipse.gsfc.nasa.gov" defined multiple times with different content (see the help page).
  29. ^ Triple Conjunction. Wn.com. Retrieved on 2014-01-19.
  30. ^ a b Triple Conjunction at the Wayback Machine (archived March 20, 2012). Science Fair Project Encyclopedia
  31. ^ HM Nautical Almanac Office: 2117 Transit of Venus. Astro.ukho.gov.uk (2011-05-03). Retrieved on 2014-01-19.
  32. ^ Articles – Occultation – OPT Telescopes. Optcorp.com. Retrieved on 2014-01-19.
  33. ^ HM Nautical Almanac Office: 2125 Transit of Venus. Astro.ukho.gov.uk (2011-05-03). Retrieved on 2014-01-19.
  34. ^ Occultation - Mutual planetary transits and occultations - Encyclopedia II at the Wayback Machine (archived December 13, 2013)
  35. ^ Jean Meeus, Mathematical Astronomy Morsels Ch.50 ; Willmann-Bell 1997.
  36. ^ A New Peek at Pluto. Astrobio.net (2002-12-18). Retrieved on 2014-01-19.
  37. ^ Sedna at Perihelion: (JPL Horizons Soln.date: 2010-Feb-01 82 obs). surewest.net
  38. ^ The Barycentre of the solar system. Bautforum.com. Retrieved on 2014-01-19.
  39. ^ a b ASP: A Special Issue on Halley's Comet. Astrosociety.org. Retrieved on 2014-01-19. Archived November 6, 2014 at the Wayback Machine
  40. ^ Giorgini, J. D.; Ostro, S. J; Benner, L. A. M.; Chodas, P.W.; et al. (2002). "Asteroid 1950 DA's Encounter With Earth in 2880: Physical Limits of Collision Probability Prediction" (PDF). Science 296 (5565): 132–136. Bibcode:2002Sci...296..132G. doi:10.1126/science.1068191. PMID 11935024. 
  41. ^ "Ideas & Trends in Summary; It's All Right To Come Out Now". New York Times. March 14, 1982. Retrieved October 1, 2014. 

Centuries and millennia[edit]

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