The #1 alternative song on January 21, 2009

Sex on Fire By Kings of Leon

Other #1 songs on January 21, 2009

#1 Hit Song

Just Dance
Lady Gaga featuring Colby O'Donis

UK #1 Song

Just Dance
Lady Gaga featuring Colby O'Donis

#1 R&B Song

Single Ladies (Put a Ring on It)
Beyoncé

#1 Country Song

Start a Band
Brad Paisley duet with Keith Urban

#1 Dance Track

Human
The Killers

Notable January 21 birthdays in the 2000s

Mackenzie Clynes
Movie Actress
Born January 21, 2003

Kennedi Clements
Movie Actress
Born January 21, 2007

Ben Carolan
Movie Actor
Born January 21, 2000

Brooklyn A Robinson
Movie Actress
Born January 21, 2008

Jackson Brundage
TV Actor
Born January 21, 2001

Princess Ingrid Alexandra
Princess
Born January 21, 2004

Zoey Diaz
TV Actress
Born January 21, 2005