My Birthday Moon

The Moon from that day, here for you now.

Fri, October 31, 2031

Full Moon

A Moon filled with light. A shape to remember that day by.

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: Fri, October 31, 2031
Sunlit surface: 99%
Lunar Date: Lunar 9/16

Share your first sky with someone close.

Try the Moon Phase Soulmate test

Moon Phase on 31 October 2031: Full Moon, 99% Lit

The Moon on 31 October 2031: Full Moon, 99% illuminated — Rendered view of the Moon on 31 October 2031 from NASA lunar surface maps

The Moon on October 31, 2031

On October 31, 2031, the Moon will be a Full Moon, 14.8 days old and 99% illuminated, in the constellation Aries about 387,743 km (240,932 mi) from Earth. The exact Full Moon fell on October 30, 2031.

Phase: Full Moon
Illumination: 99%
Moon age: 14.8 days since New Moon
Distance from Earth: 387,743 km (240,932 mi)
Constellation: Aries
Previous Full Moon: October 30, 2031
Next New Moon: November 14, 2031
Next Full Moon: November 28, 2031

Moon phases around October 31, 2031

Moon phase, illumination and age for the three days before and after October 31, 2031
Date	Moon	Lit	Age
10/28 Tue	Waxing Gibbous	94%	11.8d
10/29 Wed	Waxing Gibbous	98%	12.8d
10/30 Thu	Full Moon	100%	13.8d
10/31 Fri	Full Moon	99%	14.8d
11/1 Sat	Waning Gibbous	97%	15.8d
11/2 Sun	Waning Gibbous	92%	16.8d
11/3 Mon	Waning Gibbous	86%	17.8d

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.