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I am in the 3rd Millennium (2001 to 3000)
2009 is in the 21st century and 3rd millennium.
Yes. The 3rd Millennium began on Monday, 1st January, 2001 and will end on Wednesday, December 31, 3000.
Depending on the millennium, it can be 365,242 days or 365,243 days long. The current millennium (3rd millennium CE) is 365,242 days.
3rd Millennium BCE.