My Birthday Moon
The Moon from that day, here for you now.
Thu, May 21, 2037
Waxing Crescent
A slender beginning of light. This Moon was there at your beginning, too.
Time has passed. The shape of that day’s Moon can still be found.
Phase and illumination use noon in Korea (KST) on the selected date. They do not represent the Moon’s exact position at your birth time and place.
A small record of that day
- Date
- Thu, May 21, 2037
- Sunlit surface
- 36%
- Lunar Date
- Lunar 4/7
Share your first sky with someone close.
Moon Phase on 21 May 2037: Waxing Crescent, 36% Lit
The Moon on May 21, 2037
On May 21, 2037, the Moon will be a waxing crescent, 5.9 days old and 36% illuminated, in the constellation Cancer about 372,195 km (231,271 mi) from Earth. The next Full Moon will follow on May 29, 2037.
- Phase
- Waxing Crescent
- Illumination
- 36%
- Moon age
- 5.9 days since New Moon
- Distance from Earth
- 372,195 km (231,271 mi)
- Constellation
- Cancer
- Previous Full Moon
- April 29, 2037
- Next New Moon
- June 13, 2037
- Next Full Moon
- May 29, 2037
Moon phases around May 21, 2037
| Date | Moon | Lit | Age |
|---|---|---|---|
| 5/18 Mon | Waxing Crescent | 9% | 2.9d |
| 5/19 Tue | Waxing Crescent | 17% | 3.9d |
| 5/20 Wed | Waxing Crescent | 26% | 4.9d |
| 5/21 Thu | Waxing Crescent | 36% | 5.9d |
| 5/22 Fri | Waxing Crescent | 47% | 6.9d |
| 5/23 Sat | Waxing Gibbous | 59% | 7.9d |
| 5/24 Sun | Waxing Gibbous | 70% | 8.9d |
Values are calculated with Astronomy Engine at 12:00 Korea Standard Time (03:00 UTC) on each date; New and Full Moon dates are in UTC. Moon age counts days since the New Moon; distance is centre to centre.
How to find the Moon on your birthday
- Choose your birth year, month and day, then show your Moon.
- Read the phase name and illuminated percentage. A Full Moon appears almost completely lit; a crescent shows a smaller sunlit portion.
- Select “Create my Moon card” to make an image card for that date.
Does birth time or location change the result?
This date-only calculator uses Astronomy Engine at noon Korea Standard Time (03:00 UTC) on the selected date. It does not calculate the exact sky at your birth time or birthplace. Near a phase transition, a different time on the same date can give a different phase or illumination.