Moon Phase on Monday, August 31, 2026
Times use New York, NY (America/New_York) unless noted.
- Phase
- Waning Gibbous
- Illumination
- 87%
- Moon age
- 18.9 days
- Moonrise
- 8:55 PM
- Moonset
- 10:03 AM
Times on this page are for New York, NY (EDT) unless noted. Phase and illumination are calculated for 12:00 PM local time with astronomy-engine.
On Monday, August 31, 2026, the Moon is a waning gibbous moon, 87% illuminated and 18.9 days old. "Waning" means the lit part is shrinking after Full Moon. From the Northern Hemisphere, the lit side is now on the left.
The Moon is a waning gibbous moon on Monday, August 31, 2026 (87% lit). It rises after sunset, later each night, and is still up in the morning sky after sunrise. In New York, NY, moonrise is at 8:55 PM and moonset at 10:03 AM.
Viewing tips
The early evening is darker than at Full Moon, because the Moon now rises after sunset. This is a short window for stargazing before moonrise. Look for the Moon in the western sky in the morning.
The next major phase is the Last Quarter on September 4 at 3:51 AM EDT, 4 days from now.
The next full moon is the Harvest Moon on Saturday, September 26, 2026. See the Harvest Moon page for times in every US time zone.
FAQ
- What is the moon phase on Monday, August 31, 2026?
- On Monday, August 31, 2026, the Moon is a waning gibbous moon, about 87% illuminated and 18.9 days old (calculated for 12:00 PM, EDT).
- What time does the Moon rise on August 31 in New York, NY?
- In New York, NY, moonrise is at 8:55 PM and moonset at 10:03 AM (EDT). Open the city moonrise page for other locations.
- When is the next full moon after August 31?
- The next full moon is the Harvest Moon on Saturday, September 26, 2026 at 12:49 PM EDT.