3rd millennium

In contemporary history, the third millennium of the anno Domini or Common Era in the Gregorian calendar is the current millennium spanning the years 2001 to 3000 (21st to 30th centuries). Ongoing futures studies seek to understand what is likely to continue and what could plausibly change in the course of this period and beyond.

  • 21st century
  • 22nd century
  • 23rd century
  • 24th century
  • 25th century
  • 26th century
  • 27th century
  • 28th century
  • 29th century
  • 30th century

Past events

For coverage of past events, see:

Predictions and forecasts not included on this timeline

21st century (remainder)

For the near future, see: 2022, 2023, 2024, 2025, 2026, 2027, 2028 and 2029.

A 2020 vision of how the supply chain for bacteriophages might be organised in 2035.


Plans and goals

Expected events

Plans and goals

  • Oman Vision 2040

Expected events





  • 2089 (MMLXXXIX), May–June: Insect Magicicada broods X (17-year) and XIX (13-year) will emerge simultaneously. This will be the first time this will occur since 1868; next time will be in 2310. This event occurs only once in every 221 years.[39]


22nd century


  • 2100 (MMC): On 14 March (which will be 29 February 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 has the same day of the week for each day of the year as the Julian calendar. This will last until 28 February, 2200 of the Gregorian Calendar.
  • 2103 (MMCIII): Per an agreement between the National Archives and Caroline Kennedy, the jacket Jackie Kennedy wore on the day John F. Kennedy was assassinated cannot be displayed in public until this year.[46]
  • FAT file systems theoretically support dates up to 31 December, 2107 (though officially only up to 31 December 2099).
  • 27 April, 2109 (MMCIX) – A time capsule placed under the floor boards of the Old Queens Building at Rutgers University, in New Jersey, buried on 27 April 2009, is scheduled to be opened.[47]



  • November 2120 (MMCXX) – A South African vault of thousands of time capsules containing present-day information for future generations' use will be opened, 101 years after burial. The Vault2120 is located at Maropeng in the Cradle of Humankind and was sealed in November 2019. The vault will only be opened in the year 2120. The vault and its thousands of time capsules have been buried at least two metres underground at the Maropeng Visitor Centre.[52]


  • 2132 (MMCXXXII) – A time capsule on Rideau Street in Ottawa, Ontario, Canada is intended to be opened that year. It was buried in 1982.



  • The Year type in MySQL supports dates up to 31 December, 2155 (MMCLV).



23rd century

  • 2227 (MMCCXXVII)–2247 (MMCCXLVII): Pluto will be closer to the Sun than Neptune is for the first time since the year 1999.
  • 2265 (MMCCLXV): Return of the Great Comet of 1861.
  • 2284 (MMCCLXXXIV): Possible the perihelion of Halley's Comet might come back after the year 2209.
  • 22 March, 2285 (MMCCLXXXV) : Easter will occur on its earliest possible date for the first time since the year 1818.

24th century

  • 2400 (MMCD): The first century leap year since 2000.

25th century

27th century

28th century

29th century

  • The CPR (Canadian Pacific Railway) lease on the O&Q (Ontario and Quebec) will end on 4 January, 2883 (MMDCCCLXXXIII) after a 999-year lease.
  • The St. Michael's Catholic Cemetery (Happy Valley) in Hong Kong lease on Wanzai's Saint Fulan gentleman street will end after a 999-year lease.

30th century

Far future

See also


  1. The Oldbury Nuclear Power Station is located in South Gloucestershire, England.


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