Discover the lunar phase, illumination, and moon age for any specific date.
What was the phase of the moon on the day you were born? Our Moon Phase Calculator allows you to travel through time and see the lunar st...
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What was the phase of the moon on the day you were born? Our Moon Phase Calculator allows you to travel through time and see the lunar state for any date in the past or future.
Simply enter a date to discover if the moon was a Waxing Crescent, a Full Moon, or any of the 8 distinct lunar phases. We provide details on illumination percentage, the moon's age (days since the last new moon), and the exact emoji representation for visual lovers.
Select any date from the history books or your future plans.
Our engine uses mean synodic cycles to calculate the exact lunar position.
Check the percentage of light and how many days into the cycle the moon is.
We use the mean synodic month (29.53 days), which is highly accurate (+/- 1 day) for general curiosity and historical lookup.
Moon age refers to the number of days that have passed since the last New Moon.
Waxing means the illuminated part of the moon is growing larger; Waning means it is shrinking.
Explore the celestial cycle with ease.
Calculate a future date by adding a specific number of days.
Calculate a future date by adding a specific number of months.
Calculate a future date by adding a specific number of years.
Calculate a past date by subtracting a specific number of days.
Calculate a past date by subtracting a specific number of months.
Calculate a past date by subtracting a specific number of years.