My Birthday Moon
The Moon from that day, here for you now.
Mon, September 12, 2033
Waning Gibbous
A Moon just past its fullness. Its shadow was slowly growing again.
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
- Mon, September 12, 2033
- Sunlit surface
- 87%
- Lunar Date
- Lunar 8/19
Share your first sky with someone close.
Moon Phase on 12 September 2033: Waning Gibbous, 87% Lit
The Moon on September 12, 2033
On September 12, 2033, the Moon will be a waning gibbous, 18.2 days old and 87% illuminated, in the constellation Pisces about 362,209 km (225,066 mi) from Earth. The next New Moon will follow on September 23, 2033.
- Phase
- Waning Gibbous
- Illumination
- 87%
- Moon age
- 18.2 days since New Moon
- Distance from Earth
- 362,209 km (225,066 mi)
- Constellation
- Pisces
- Previous Full Moon
- September 9, 2033
- Next New Moon
- September 23, 2033
- Next Full Moon
- October 8, 2033
Moon phases around September 12, 2033
| Date | Moon | Lit | Age |
|---|---|---|---|
| 9/9 Fri | Full Moon | 100% | 15.2d |
| 9/10 Sat | Waning Gibbous | 98% | 16.2d |
| 9/11 Sun | Waning Gibbous | 94% | 17.2d |
| 9/12 Mon | Waning Gibbous | 87% | 18.2d |
| 9/13 Tue | Waning Gibbous | 78% | 19.2d |
| 9/14 Wed | Waning Gibbous | 68% | 20.2d |
| 9/15 Thu | Waning Gibbous | 57% | 21.2d |
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.