Calculate the moon phase for any date, including lunar age, illumination percentage, waxing or waning status, days until the next new moon, days until the next full moon, and lunar cycle position. Use this moon phase calculator for gardening, fishing, hunting, photography, camping, hiking, stargazing, and nature planning.
Moon phase by date:
The calculator estimates how far the selected date is into the lunar cycle and assigns a moon phase name.
Moon illumination:
The calculator estimates the percentage of the moon’s visible disk that is illuminated.
Next full moon:
The calculator estimates how many days remain until the moon reaches the full moon point of the cycle.
Next new moon:
The calculator estimates how many days remain until the next new moon and the start of the next lunar cycle.
A moon phase calculator helps plan outdoor activities around moonlight, dark skies, full moons, new moons, and changing nighttime visibility.
It can be useful for gardening, fishing, hunting, photography, camping, hiking, astronomy, stargazing, tide awareness, and general nature planning.
Your result shows the estimated moon phase, moon age, illumination percentage, waxing or waning status, days until full moon, days until new moon, lunar cycle percentage, and phase planning notes. These are practical estimates based on the average lunar cycle.
The calculator estimates the number of days since a known new moon, divides by the average lunar cycle length, and assigns a phase based on cycle position.
A lunar cycle is about 29.53 days from one new moon to the next new moon.
Waxing means the illuminated part of the moon is increasing from new moon toward full moon.
Waning means the illuminated part of the moon is decreasing from full moon toward the next new moon.