22nd century

Technological predictions

• According to the Discovery Channel documentary series, Extreme Engineering, the Japanese proposed Shimizu Mega-City Pyramid could be complete by 2110.
• The One Hundred Year Study on Artificial Intelligence initiated by Stanford University will be concluded in 2115.
• The Chernobyl New Safe Confinement reaches end of designed lifetime in the 2110s.
• 2162 or later: The satellite Envisat, declared "dead" in 2012, is expected to deorbit and burn up in the atmosphere no earlier than 2162.
• By 2200, it is predicted that Earth will become a Type I civilization on the Kardashev scale, according to Nikolai Kardashev's extrapolation of 1% energy usage growth per year.

  Social predictions

• According to the UN Population Bureau, life expectancy in 2200 will be around 100 years for developed countries and the world population will be about 11 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.

  Climate change

• By 2100, 12% of the bird species existing at the beginning of the twenty-first century are expected to be extinct or threatened with extinction.
• 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.
• By 2100, nearly all existing habitats of coral reefs are projected to disappear due to rising sea surface temperature and ocean acidification.

  Calendric predictions

• On March 14, 2100, 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 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.
• FAT file systems theoretically support dates up to December 31, 2107.
• 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 as it did in that year, likely requiring the movement of the Feast of Saint Patrick's Day to another date.

  Time capsules

• April 27, 2109 – A time capsule placed under the floor boards of the Old Queens Building at Rutgers University, in New Jersey, buried on April 27, 2009, is scheduled to be opened.
• September 19, 2110 – A time capsule at the Plaza de Armas in Santiago, Chile is intended to be opened. 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.
• November 18, 2115 – In 2015, Robert Rodriguez and John Malkovich teamed up with Louis XIII de Rémy Martin to create a film called 100 Years. It was put into a time capsule and is scheduled to be released exactly 100 years later.
• November 2120 - 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.
• 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. It was buried in 1997.

  Astronomical predictions

Solar eclipses

• December 8, 2113: Annular solar eclipse,, Solar Saros 134.
• June 3, 2114: Total solar eclipse of 6 min 32 s, Solar Saros 139.
• October 16, 2126: Total solar eclipse, Solar Saros 155.
• December 19, 2131: Annular solar eclipse,, saros 134.
• June 13, 2132: Total solar eclipse of 6 min 55 s, saros 139.
• December 30, 2149: Annular solar eclipse,, saros 134.
• June 25, 2150: Solar eclipse of 7 min 14 s, Solar Saros 139.

• January 10, 2168: Annular solar eclipse,, saros 134.
• July 5, 2168: Largest total solar eclipse in the 3rd millennium, with a magnitude of 1.08074 of 7 min 26 s, saros 139.
• January 20, 2186: Annular solar eclipse,, saros 134.
• Total solar eclipse of July 16, 2186 of 7 min 29 s, Saros 139, "crowning" this series.

Lunar eclipses

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

  Triple conjunctions

• 2123: Triple conjunction of Mars–Jupiter.
• 2148: Triple conjunction Mars–Saturn.
• June–October 2169: Triple conjunction of Saturn, Uranus and Neptune.
• 2170: Triple conjunction Mars–Jupiter.
• 2185: Triple conjunction Mars–Saturn.
• 2187: Triple conjunction Mars–Saturn.

  Transits and occultations

• December 11, 2117: Transit of Venus.
• September 14, 2123: At 15:28 UTC, Venus will occult Jupiter.
• December 8, 2125: Transit of Venus.
• July 29, 2126: At 16:08 UTC, Mercury will occult Mars.
• December 3, 2133: At 14:14 UTC, Mercury will occult Venus.
• September 2, 2197: Venus occults Spica.

• December 24, 2197: Earth's Moon will occult Neptune.

  Other phenomena

• August, 2113: First time Pluto reaches aphelion since its discovery.
• March 10, 2130: At 07:32 UTC, Sun passes through the Solar System barycenter.
• 2134: Comet Halley will return to the inner Solar System.
• 2135–2136: Halley's comet will be at perihelion.
• August 5, 2150: Main-belt asteroid 78 Diana will pass about from Earth threatening asteroid 1950 DA and perturb 1950 DA's long-term trajectory.
• May 19, 2161: All eight planets are predicted to be on the same side of the Sun, within 69 degrees.
• 2174: The second full orbit of Neptune around the Sun since its discovery in 1846.
• January 28, 2178: "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.