🌙 Moon Phase by Date
Find the phase of the Moon for any date and time: illumination, moon age, the next new and full moon, and every phase in the selected month. Calculated in your browser, no sign-up.

Moon Phase by Date

Find the phase of the Moon for any date and time: illumination, moon age, the next new and full moon, and every phase in the selected month. Calculated in your browser, no sign-up.

Moon phases

🌑 New Moon
The Moon is between Earth and the Sun and its lit side faces away. Almost invisible.
🌒 Waxing Crescent
A thin lit crescent on the right that grows every night. Seen in the evening after sunset.
🌓 First Quarter
The right half of the disc is lit. About seven days into the cycle.
🌔 Waxing Gibbous
More than half of the disc is lit and still growing toward full.
🌕 Full Moon
The whole disc is lit. The Moon rises at sunset and shines all night.
🌖 Waning Gibbous
Past full, the lit part shrinks. Visible late in the evening and in the morning.
🌗 Last Quarter
Half of the disc is lit again, now the left half.
🌘 Waning Crescent
A thin crescent on the left, seen before sunrise a few days before the new Moon.

When to use

  • Planning astrophotography and stargazing
  • Gardening, fishing, hiking and travel
  • The moon phase on a birthday or historic date
  • Study, school projects and calendars

How to use

  1. Pick a date and, if needed, a time
  2. See the phase, illumination and moon age at once
  3. Check the next phases and the dates of this month's phases
  4. Use ‹ and › to change the day, “Now” returns to the current moment

FAQ

What are the phases of the Moon?
There are eight main phases: new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter and waning crescent. A full cycle takes about 29.5 days.
How is the moon phase calculated?
The tool uses astronomical formulas for the positions of the Moon and Sun. The exact times of new moon, quarters and full moon are accurate to a few minutes, and illumination to a fraction of a percent.
How long is a lunar cycle?
On average 29.53 days, but individual cycles range from about 29.3 to 29.8 days because the Moon's orbital speed varies.
Why does the Moon look mirrored in the Southern Hemisphere?
The lit part appears on the opposite side there. The picture on this page shows the view from the Northern Hemisphere.
Is my data sent to a server?
No. Everything is calculated in your browser.