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 May 13, 1973 the Moon was a waxing gibbous
87% of its face was lit, growing towards full.
The Moon on your next birthdays
| 2026 | waning crescent | 15% | |
| 2027 | first quarter | 54% | |
| 2028 | waning gibbous | 77% | |
| 2029 | new moon | 0% | |
| 2030 | waxing gibbous | 79% | |
| 2031 | last quarter | 53% |
Every year's Moon on May 13, 1950–2035 →
The Moon on every day of the year
- January 1
- January 2
- January 3
- January 4
- January 5
- January 6
- January 7
- January 8
- January 9
- January 10
- January 11
- January 12
- January 13
- January 14
- January 15
- January 16
- January 17
- January 18
- January 19
- 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
- February 2
- February 3
- February 4
- February 5
- February 6
- February 7
- February 8
- February 9
- February 10
- February 11
- February 12
- February 13
- February 14
- February 15
- February 16
- February 17
- February 18
- February 19
- 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
- March 7
- March 8
- March 9
- March 10
- March 11
- March 12
- March 13
- March 14
- March 15
- March 16
- March 17
- March 18
- March 19
- 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
- April 3
- April 4
- April 5
- April 6
- April 7
- April 8
- April 9
- April 10
- April 11
- April 12
- April 13
- April 14
- April 15
- April 16
- April 17
- April 18
- April 19
- April 20
- April 21
- April 22
- April 23
- April 24
- April 25
- April 26
- April 27
- April 28
- April 29
- April 30
- May 1
- May 2
- May 3
- May 4
- May 5
- May 6
- May 7
- May 8
- May 9
- May 10
- May 11
- May 12
- May 13
- May 14
- May 15
- May 16
- May 17
- May 18
- May 19
- May 20
- May 21
- May 22
- May 23
- May 24
- May 25
- May 26
- May 27
- May 28
- May 29
- May 30
- May 31
- June 1
- June 2
- June 3
- June 4
- June 5
- June 6
- June 7
- June 8
- June 9
- June 10
- June 11
- June 12
- June 13
- June 14
- June 15
- June 16
- June 17
- June 18
- June 19
- June 20
- June 21
- June 22
- June 23
- June 24
- June 25
- June 26
- June 27
- June 28
- June 29
- June 30
- July 1
- July 2
- July 3
- July 4
- July 5
- July 6
- July 7
- July 8
- July 9
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- July 11
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- July 13
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- July 18
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- July 21
- July 22
- July 23
- July 24
- July 25
- July 26
- July 27
- July 28
- July 29
- July 30
- July 31
- August 1
- August 2
- August 3
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- August 5
- August 6
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- August 10
- August 11
- August 12
- August 13
- August 14
- August 15
- August 16
- August 17
- August 18
- August 19
- August 20
- August 21
- August 22
- August 23
- August 24
- 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
- September 7
- September 8
- September 9
- September 10
- September 11
- September 12
- September 13
- September 14
- September 15
- September 16
- September 17
- 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
- November 3
- November 4
- November 5
- November 6
- November 7
- November 8
- November 9
- November 10
- November 11
- November 12
- November 13
- November 14
- November 15
- November 16
- November 17
- November 18
- November 19
- November 20
- November 21
- November 22
- November 23
- November 24
- November 25
- November 26
- November 27
- November 28
- November 29
- November 30
- December 1
- December 2
- December 3
- December 4
- December 5
- December 6
- December 7
- December 8
- December 9
- December 10
- December 11
- December 12
- December 13
- December 14
- December 15
- December 16
- December 17
- December 18
- December 19
- December 20
- December 21
- December 22
- December 23
- December 24
- December 25
- December 26
- December 27
- December 28
- December 29
- December 30
- December 31
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