What was the moon phase on my birthday?
Enter any date and see the exact phase of the Moon that day: its name, how much of it was lit, and a drawing of it, calculated from the real Sun-Earth-Moon geometry. Free.
On January 21, 2010 the Moon was a waxing crescent
31% of its face was lit, growing towards full.
The Moon on your next birthdays
| 2026 | waxing crescent | 7% | |
| 2027 | waxing gibbous | 98% | |
| 2028 | waning crescent | 23% | |
| 2029 | waxing crescent | 38% | |
| 2030 | waning gibbous | 96% | |
| 2031 | waning crescent | 4% |
Every year's Moon on January 21, 1950–2035 →
The Moon on every day of the year
- January 1
- January 2
- January 3
- January 4
- January 5
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- January 9
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- January 18
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- January 20
- January 21
- January 22
- January 23
- January 24
- January 25
- January 26
- January 27
- January 28
- January 29
- January 30
- January 31
- February 1
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- February 18
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- February 20
- February 21
- February 22
- February 23
- February 24
- February 25
- February 26
- February 27
- February 28
- February 29
- March 1
- March 2
- March 3
- March 4
- March 5
- March 6
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- March 11
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- March 16
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- March 20
- March 21
- March 22
- March 23
- March 24
- March 25
- March 26
- March 27
- March 28
- March 29
- March 30
- March 31
- April 1
- April 2
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- April 4
- April 5
- April 6
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- April 21
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- April 27
- April 28
- April 29
- April 30
- May 1
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- May 5
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- May 28
- May 29
- May 30
- May 31
- June 1
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- June 27
- June 28
- June 29
- June 30
- July 1
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- July 28
- July 29
- July 30
- July 31
- August 1
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- August 20
- August 21
- August 22
- August 23
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- August 25
- August 26
- August 27
- August 28
- August 29
- August 30
- August 31
- September 1
- September 2
- September 3
- September 4
- September 5
- September 6
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- September 10
- September 11
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- September 16
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- September 18
- September 19
- September 20
- September 21
- September 22
- September 23
- September 24
- September 25
- September 26
- September 27
- September 28
- September 29
- September 30
- October 1
- October 2
- October 3
- October 4
- October 5
- October 6
- October 7
- October 8
- October 9
- October 10
- October 11
- October 12
- October 13
- October 14
- October 15
- October 16
- October 17
- October 18
- October 19
- October 20
- October 21
- October 22
- October 23
- October 24
- October 25
- October 26
- October 27
- October 28
- October 29
- October 30
- October 31
- November 1
- November 2
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- November 11
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- November 18
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- November 20
- November 21
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- November 25
- November 26
- November 27
- November 28
- November 29
- November 30
- December 1
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- December 3
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- December 21
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- December 29
- December 30
- December 31
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