How to use it
- Open the page to see the Moon as it is right now.
- Check the dates and times of the next phases.
- Page through the monthly calendar and tap a day for details.
- Pick a year to list all of its full moons.
What you see on the page
- The Moon today: a drawing of the current phase, the phase name, the illuminated percentage and whether the Moon is waxing (growing) or waning (shrinking).
- Moon age: days since the last new moon. A full cycle averages about 29.5 days.
- Upcoming phases: the exact date and time of the next new moon, first quarter, full moon and last quarter.
- Moon calendar: every day of the month with a small picture of the Moon at midday. Days with a main phase are marked NM, FQ, FM or LQ.
- Full moons of the year: each full moon with its time, traditional name, and a blue moon label when one applies.
All times are shown in the time zone your browser reports. Everything is calculated on your device; no location is requested or sent.
The eight moon phases
| Phase | What you see (Northern Hemisphere) | Illumination |
|---|---|---|
| New moon | Moon not visible, close to the Sun | about 0% |
| Waxing crescent | Thin sliver on the right | 1–49% |
| First quarter | Right half lit | about 50% |
| Waxing gibbous | More than half, growing | 51–99% |
| Full moon | Whole disk lit | about 100% |
| Waning gibbous | More than half, shrinking | 99–51% |
| Last quarter | Left half lit | about 50% |
| Waning crescent | Thin sliver on the left | 49–1% |
New moon, first quarter, full moon and last quarter are exact moments. The four in-between phases are periods that last about a week each. In the Southern Hemisphere the picture is mirrored: a waxing Moon is lit on the left.
Full moon names
In the US, each month's full moon has a traditional name, most popularized by the Farmer's Almanac and drawn from Native American, Colonial American and European sources:
| Month | Name | Month | Name |
|---|---|---|---|
| January | Wolf Moon | July | Buck Moon |
| February | Snow Moon | August | Sturgeon Moon |
| March | Worm Moon | September | Corn Moon |
| April | Pink Moon | October | Hunter's Moon |
| May | Flower Moon | November | Beaver Moon |
| June | Strawberry Moon | December | Cold Moon |
The Harvest Moon is the full moon closest to the fall equinox, so it can land in September or early October; the full moon after it is the Hunter's Moon. The year list on the page applies that rule.
Blue moons and supermoons
A blue moon in the popular sense is the second full moon in a single calendar month. Because the lunar cycle is about 29.5 days, it happens roughly once every two to three years. The page marks it automatically. (An older definition calls a blue moon the third full moon in a season that has four; the page uses the calendar-month meaning.)
A supermoon is a full moon that happens near perigee, the Moon's closest point to Earth, which makes it look slightly bigger and brighter. The page does not flag supermoons because there is no single official cutoff for the term.
How the times are calculated
Phase times come from Jean Meeus's Astronomical Algorithms, the standard reference for this kind of calculation, and are accurate to within about a minute. Illumination is computed from the positions of the Sun and the Moon. The daily pictures in the calendar show the Moon at noon local time.
The phase is the same for everyone on Earth at a given moment, but the local date and time differ by time zone. A full moon at 1:30 a.m. Eastern time is still the previous evening in Los Angeles. If you plan to photograph a full moon, the night before and the night after look almost the same to the naked eye.
Frequently asked questions
What is the moon phase today?
The top of the page shows today's phase, the illuminated percentage and whether the Moon is waxing or waning, updated every minute.
When is the next full moon?
The upcoming phases list shows the exact date and time of the next full moon in your time zone, and the line below it tells you how many days are left.
How long is a lunar cycle?
The average time from one new moon to the next (the synodic month) is about 29.53 days. Individual cycles vary by several hours.
What is a blue moon?
In everyday use, the second full moon in one calendar month. It happens about every two to three years, and the page labels it in the yearly full moon list.
Why does the Moon look different in Australia?
From the Southern Hemisphere the Moon appears upside down compared to the US view, so the lit side of a waxing Moon is on the left instead of the right. The phase and illumination are the same.
Last updated: November 12, 2026