My Birthday Moon

The Moon from that day, here for you now.

Wed, January 31, 2029

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: Wed, January 31, 2029
Sunlit surface: 99%
Lunar Date: Lunar 12/17

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Moon Phase on 31 January 2029: Waning Gibbous, 99% Lit

The Moon on 31 January 2029: Waning Gibbous, 99% illuminated — Rendered view of the Moon on 31 January 2029 from NASA lunar surface maps

The Moon on January 31, 2029

On January 31, 2029, the Moon will be a waning gibbous, 16.4 days old and 99% illuminated, in the constellation Leo about 364,723 km (226,628 mi) from Earth. The next New Moon will follow on February 13, 2029.

Phase: Waning Gibbous
Illumination: 99%
Moon age: 16.4 days since New Moon
Distance from Earth: 364,723 km (226,628 mi)
Constellation: Leo
Previous Full Moon: January 30, 2029
Next New Moon: February 13, 2029
Next Full Moon: February 28, 2029

Moon phases around January 31, 2029

Moon phase, illumination and age for the three days before and after January 31, 2029
Date	Moon	Lit	Age
1/28 Sun	Waxing Gibbous	94%	13.4d
1/29 Mon	Waxing Gibbous	98%	14.4d
1/30 Tue	Full Moon	100%	15.4d
1/31 Wed	Waning Gibbous	99%	16.4d
2/1 Thu	Waning Gibbous	95%	17.4d
2/2 Fri	Waning Gibbous	89%	18.4d
2/3 Sat	Waning Gibbous	80%	19.4d

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.