My Birthday Moon

The Moon from that day, here for you now.

Fri, October 4, 2030

First Quarter

Light and shadow, side by side. There was still room for the light to grow.

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 4, 2030
Sunlit surface: 50%
Lunar Date: Lunar 9/8

Share your first sky with someone close.

Try the Moon Phase Soulmate test

Moon Phase on 4 October 2030: First Quarter, 50% Lit

The Moon on 4 October 2030: First Quarter, 50% illuminated — Rendered view of the Moon on 4 October 2030 from NASA lunar surface maps

The Moon on October 4, 2030

On October 4, 2030, the Moon will be at first quarter, 6.7 days old and 50% illuminated, in the constellation Sagittarius about 371,423 km (230,791 mi) from Earth. The next Full Moon will follow on October 11, 2030.

Phase: First Quarter
Illumination: 50%
Moon age: 6.7 days since New Moon
Distance from Earth: 371,423 km (230,791 mi)
Constellation: Sagittarius
Previous Full Moon: September 11, 2030
Next New Moon: October 26, 2030
Next Full Moon: October 11, 2030

Moon phases around October 4, 2030

Moon phase, illumination and age for the three days before and after October 4, 2030
Date	Moon	Lit	Age
10/1 Tue	Waxing Crescent	18%	3.7d
10/2 Wed	Waxing Crescent	27%	4.7d
10/3 Thu	Waxing Crescent	38%	5.7d
10/4 Fri	First Quarter	50%	6.7d
10/5 Sat	Waxing Gibbous	61%	7.7d
10/6 Sun	Waxing Gibbous	71%	8.7d
10/7 Mon	Waxing Gibbous	81%	9.7d

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.