2009 CE
- Common Era
- 2009 CE
- Gregorian Calendar
- 2009 AD
- Holocene Calendar
- 12009 HE
- Japanese Calendar
- Heisei 21 (平成21年)
- Japanese Imperial Year
- Kōki 2669 (皇紀2669年)
- Chinese Sexagenary Cycle
- Yin Earth Ox (己丑)
Milestones
- First human in space
- 48 years ago
- World War II ends
- 64 years ago
- Hindu-Arabic numerals introduced to Europe
- 807 years ago
- Mythical founding of Japan
- 2668 years ago
- Foundation of Rome
- 2761 years ago
- Beginning of Xia Dynasty in China
- 4109 years ago
- First Egyptian pyramid completed
- 4619 years ago
- End of the Paleolithic Period
- 12008 years ago