Why the Moon's Phase Changes Every Day
The Moon's phase changes because the Sun-Moon angle changes as the Moon orbits Earth. Each day the lit shape shifts a little, moving through a 29.5-day lunar cycle. The live tool computes today's phase and illumination from that angle rather than using fixed calendar text.
The 8 Moon Phases at a Glance
The cycle moves through New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, and Waning Crescent. The page highlights where today sits in that sequence, while the illumination percentage shows how much of the visible Moon is sunlit.
Need a Different Date Instead of Today?
This page is focused on right now. To look up a birthday, a past date, or a future date, use the moon phase calculator to check a different date. If you want the personal Moon you were born under, start with your birth chart and compare the phase with your natal moon sign.
Frequently Asked Questions
What moon phase is it today?
Today's live moon phase, illumination percentage, and the approximate timing of the next full Moon and new Moon are shown in the result area above. The value is calculated dynamically, not written as a fixed answer.
How often does the moon's phase change?
The Moon's phase changes continuously as the Sun-Moon angle shifts. The named phases are milestones in a full lunar cycle of about 29.5 days.
What's the difference between this page and the Moon Phase Calculator?
This page defaults to today and keeps the focus on the current sky. The Moon Phase Calculator lets you choose a different date in the past or future.
Where can I check the moon phase for a different date?
Use the moon phase calculator when you need a specific date instead of today.