My Birthday Moon
The Moon from that day, here for you now.
Wed, August 21, 2030
Last Quarter
Light and shadow met halfway again. Another lunar cycle was drawing toward its close.
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
- Wed, August 21, 2030
- Sunlit surface
- 49%
- Lunar Date
- Lunar 7/23
Share your first sky with someone close.
Moon Phase on 21 August 2030: Last Quarter, 49% Lit
The Moon on August 21, 2030
On August 21, 2030, the Moon will be at last quarter, 21.7 days old and 49% illuminated, in the constellation Taurus about 403,723 km (250,862 mi) from Earth. The next New Moon will follow on August 28, 2030.
- Phase
- Last Quarter
- Illumination
- 49%
- Moon age
- 21.7 days since New Moon
- Distance from Earth
- 403,723 km (250,862 mi)
- Constellation
- Taurus
- Previous Full Moon
- August 13, 2030
- Next New Moon
- August 28, 2030
- Next Full Moon
- September 11, 2030
Moon phases around August 21, 2030
| Date | Moon | Lit | Age |
|---|---|---|---|
| 8/18 Sun | Waning Gibbous | 77% | 18.7d |
| 8/19 Mon | Waning Gibbous | 68% | 19.7d |
| 8/20 Tue | Waning Gibbous | 59% | 20.7d |
| 8/21 Wed | Last Quarter | 49% | 21.7d |
| 8/22 Thu | Waning Crescent | 40% | 22.7d |
| 8/23 Fri | Waning Crescent | 31% | 23.7d |
| 8/24 Sat | Waning Crescent | 23% | 24.7d |
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 “Share this Moon” to create 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.