What was the moon phase on your birthday?
Find your birthday moon phase and its illuminated percentage. Enter your birth date, place and time, or choose unknown time to use noon in the selected location.
Free
Discover your date
Astronomical calculations: 1 January 1940 to today. Weather: from 1981, where available; recent data may be revised.
Choose a place from the list
Choose a time or select “I don’t know”.
Read the phase alongside the percentage
Illumination describes how much of the lunar disc appears lit. A similar percentage can occur as the Moon waxes or wanes, so the phase name also places it within the cycle. The label is descriptive, not a claim that your birth coincided with the exact instant of a full or new moon.
Use the local birth time
Your selected place supplies the time zone for the calculation. This matters particularly around midnight, when the local date can differ from the date elsewhere. If the time is unknown, noon is an explicit reference rather than a guessed birth time.
Keep the date in a personal gift
After exploring, you can create a digital date portrait with names and a dedication such as “The day you brought a little more light into our lives”. Preview it before buying. The purchased gift is a downloadable PDF for you to print, including A4 and A3 options.
Questions before you choose
Is this my astrological moon sign?
No. This uses Astronomy Engine to calculate the astronomical phase, with no horoscope or compatibility reading.
Can I see a photograph taken on my birthday?
No archive photograph is supplied. The phase is calculated for dates from 1940 to today, independently of weather availability.
Your gift by email, ready to print and share.