January
* January 15 — Presidential elections in Finland
* January 23 — Chinese New Year and scheduled new moon.[1] This time of year is associated with the Water-Dragon in Chinese astrology.[2]
* January 31 — 433 Eros, the second-largest Near Earth Object on record (size 13x13x33 km) is expected to pass Earth at 0.1790 astronomical units (~16.647 Million Miles). NASA studied Eros in the NEAR Shoemaker probe launched February 2000.[3]
February
* February 5 — Super Bowl XLVI will be played.
* February 6 — If she is still on the throne, Elizabeth II will celebrate her Diamond Jubilee. A series of festivities across the United Kingdom and Commonwealth of Nations will likely run throughout the year.
April
* April 1 — The United States Census of 1940 is released to the public.
* April 17 — The United States will cede control of the military of the Republic of Korea after 50 years of control.
May
* May 20 — Annular solar eclipse, a Sunday.
* May - French Presidential election (if the incumbent's term had normally finished in May).
* May - Irish general election due to be held if the current government remains in office for a full term.
June
* June 6 — Second and last solar transit of the planet Venus of this century; the next pair is predicted to occur in 2117 and 2125 (see Transit of Venus, 2012).
* June 9–July 1 — 2012 European Football Championship will be played in Poland/Ukraine.
July
* July 1 — The first possible government in Hong Kong elected by Universal suffrage take office.
* July 1 — Presidential Elections in Mexico.
* July 27 — Opening ceremony of the 2012 Summer Olympics begins in London at 7:30 pm UTC, 8:30pm BST.[4]
August
* August 12 — Closing ceremony of the 2012 Summer Olympics in London, United Kingdom, a Sunday.
* August 29 — Start of the 2012 Summer Paralympics
September
* September 9 — Finish of the 2012 Summer Paralympics
October
* October 19 — at 1:36 UTC, the Earth will be home to 7 billion people, according to the US Census Bureau.[5][6]
November
* November 6 — United States presidential election, 2012
* November 6 — United States Senate elections, 2012
* November 6 — United States House of Representatives election, 2012
* November 6 — Puerto Rico general election, 2012
* November 13 — Total solar eclipse (visible in northern Australia and the South Pacific).
* November 28 — Penumbral lunar eclipse
December
* December 3 — Jupiter oppositions.
* December 21 — The Mesoamerican Long Count calendar, notably used by the Maya civilization among others of pre-Columbian Mesoamerica, completes its thirteenth b'ak'tun cycle since the calendar's mythical starting point (equivalent to 3114 BC August 11 in the proleptic Gregorian calendar, according to the "GMT-correlation" JDN= 584283).[7] The Long Count b'ak'tun date of this starting point (13.0.0.0.0) is repeated, for the first time in a span of approximately 5,125 solar years. The significance of this period-ending to the pre-Columbian Maya themselves is unclear, and there is an incomplete inscription (Tortuguero Stela 6) that records this date. It is also to be found carved on the walls of the Temple of Inscriptions in Palenque, where it functions as a base date from which other dates are computed.[8] However, it is conjectured that this may represent in the Maya belief system a transition from the current Creation world into the next. The December solstice for 2012 also occurs on this day. Astronomically, the Earth is said to be aligned facing the center of the Milky Way behind the Sun on this date.
* December 23 — The alternative date for the completion of the thirteenth b'ak'tun cycle in the Maya calendar, using a version of the GMT-correlation based on a JDN of 584285 (a.k.a. the "Lounsbury correlation"), which is supported by a smaller number of Mayanist researchers.[9]
* December 31 — Expiration of the Kyoto Protocol.
Unknown dates
* Trinidad and Tobago will hold their general elections.
* The Replacement Eastern Span of the San Francisco-Oakland Bay Bridge will open to traffic, replacing the old Eastern cantilever span that was damaged in the Loma Prieta Earthquake in 1989, almost a quarter century (23 years) after the span was damaged[10]
* India's 11th Five-Year Plan (2007–2012) ends and the 12th one (2012–2017) starts.
* The United Kingdom plans to complete 5-year process to cease analogue television broadcasts region-by-region, with Meridian Broadcasting, ITV London, Tyne Tees Television and UTV being the last areas to switch off analogue.[11]
* Australia and Ireland plan to cease analogue television broadcasts.
* This is the year when California's ban on the production of foie gras is scheduled to take effect.
* NASA's new Orion spacecraft is scheduled to become fully operational for International Space Station support flights.
* China plans to launch the Kuafu spacecraft
* Freedom Tower in New York City: Construction is scheduled to be finished by 2012 at the latest.
* Sight & Sound magazine will conduct its Top Ten Films of All-Time poll for the seventh decade since 1952.
* The Hallandsas Ridge Tunnel is set to be completed, 17 years behind the original plan.
* The Canberra class light aircraft carriers/large amphibious ships, the largest ships ever to be operated by the Royal Australian Navy, are planned to be in service by 2012.
* NASA predicts that the Sun will also reverse its own magnetic poles during 2012 as result of reaching the end of the current 11-year sunspot cycle.[12]
* The Canadian Navy receives the delivery of the first Joint Support Ship.
* In 2012, asteroid 99942 Apophis comes into view again to recalculate odds of impact.
* Charles Manson will be eligible for a parole hearing again.