UK, 
US, 
Australia & 
IrelandAt A Glance
21 January 2010 at a glance
- Day of the week
- 21 January 2010 was a Thursday.
- Billboard Hot 100 No. 1
- The Billboard Hot 100 No. 1 was “Tik Tok” by Kesha.
- Top Film of 2010
- The highest-grossing film worldwide released in 2010 was Toy Story 3.
- Bestselling Novel of 2010
- “The Girl Who Kicked the Hornet's Nest” by Stieg Larsson was No. 1 on Publishers Weekly's US fiction list for 2010.
- Top-Rated TV Show
- “American Idol” (FOX) was No. 1 in the Nielsen ratings for the 2010–11 season.
- Star sign
- The star sign for 21 January is Aquarius.
- Chinese zodiac
- In the Chinese zodiac, 21 January 2010 fell in the Year of the Ox.
- Birthstone
- The birthstone for January is Garnet.
- Moon phase
- The moon phase on 21 January 2010 was Waxing Crescent.
On this day: 21 January
- 2004 NASA's MER-A (the Mars Rover Spirit) ceases communication with mission control. The problem lies in the management of its flash memory and is fixed remotely from Earth on February 6.
- 2009 Israel withdraws from the Gaza Strip, officially ending a three-week war it had with Hamas. However, intermittent fire by both sides continues in the weeks to follow.
- 2011 Anti-government demonstrations take place in Tirana, Albania. Four people die from gunshots, allegedly fired from armed police protecting the Prime Minister's office.
- 2014 Rojava conflict: The Jazira Canton declares its autonomy from the Syrian Arab Republic.
- 2017 Over 400 cities across America and 160+ countries worldwide participate in a large-scale women's march, including in Portland, on Donald Trump's first full day as President of the United States.
Famous people born on January 21
- Ingrid Alexandra, Crown Princess of Norway (born 2004)
- Geena Davis, American actress and producer (born 1956)
- Grigori Rasputin, Russian mystic (1869–1916)
- IShowSpeed, American YouTuber and online streamer (born 2005)
Source: Wikipedia (CC BY-SA 4.0)
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Events of 2010 in the United States
A selection from Wikipedia's '2010 in the United States'. Not a complete list.
- April 5 – Adventure Time premieres on Cartoon Network.
- May 7 – Iron Man 2, directed by Jon Favreau, is released by Marvel Studios as the third film in the Marvel Cinematic Universe (MCU) and the direct sequel to 2008's Iron Man.
- June 18 – Pixar Animation Studios' eleventh feature film, Toy Story 3, the sequel to 1999's Toy Story 2, is released in theaters, surpassing 2003's Finding Nemo as the studio's biggest financial success.
Life in the US in 2010
President
Barack Obama
Gas (per gallon)
$2.78
Loaf of Bread
$1.64
Average House
$222,900
Weekly Wage
$718
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