A blue moon and a lunar eclipse occurred on the same day.
Scarlett Johansson made her debut on Broadway.
US President Barack Obama received a vaccine jab against the swine flu.
James Cameron's 'Avatar' was released in the US. It became the highest-grossing film of all time at the time.
Tiger Woods announced his indefinite leave from professional golf to focus on his marriage.
A sequel to LittleBigPlanet was released for the PlayStation Portable.
The Twilight Saga: New Moon premiered in Los Angeles.
Microsoft released the Windows 7 operating system.
EA Games' FIFA 10, the highest-rated FIFA game made, was released in Europe.
The American sitcom 'Modern Family' premiered on ABC.
'Harry Potter' and the Half-Blood Prince” movie by J.K. Rowling was released.
NASA launched the Lunar Reconnaissance Orbiter, the first American lunar mission in ten years.
Two American journalists were sentenced to 12 years of penal labor after illegally entering North Korea.
General Motors filed for Chapter 11 bankruptcy.
Justin Bieber made his first tweet at 8:27 pm, promoting his single 'One Time.'
NASA's Atlantis Space Shuttle launched on the final mission to service the Hubble Space Telescope.
Same-sex marriage was legalized in Sweden.
The Zimbabwean dollar was suspended indefinitely.
The American sitcom 'Parks and Recreation' debuted on NBC.
Texas movie fans were surprised with a special premiere viewing of that year's Star Trek movie.
North Korea performed a controversial intercontinental ballistic missile test.
North Korea launched the infamous Kwangmyŏngsŏng-2 satellite.
The strain of swine flu known as H1N1 had its first case in the US.
NASA's Discovery Space Shuttle launched from the Kennedy Space Center on mission STS-119.
Brazilian soccer athlete Neymar da Silva Santos Jr. started his professional career at just 17 years old.
Queen Elizabeth II knighted English fantasy author Terry Pratchett.
At exactly 23:31:30 (UTC), Unix time passed 1,234,567,890.
R&B superstar Rihanna was assaulted by Chris Brown, her boyfriend at the time.
173 people died in Victoria, Australia, during the Black Saturday bushfires.
RuPaul's Drag Race season 1 debuted on Logo TV.
Adrian Hidalgo set the world record for spinning a diabolo around his leg 117 times in 1 minute.
The USA's first African-American President, Barack Obama, conducted his first address.
US Airways Flight 1549 landed on the Hudson River, NYC.
The cryptocurrency 'Bitcoin' was created, providing a new digital currency.
