The September 2026 New Moon is on Thursday, September 10. It will be the ninth new moon of 2026.
A new moon is the first lunar phase that happens about once a month or 29.53 days on average. The moon itself is not visible, though you may be able to “see” it because it blocks the visibility of the stars behind it.
Ready to dive a little deeper into the September New Moon of 2026? Learn more about the moon’s nicknames and other facts about it.
Get ready for 2026’s September new moon
The September New Moon is on Thursday, September 10th. It will be the ninth new moon of the year.
The September 10 New Moon is the last new moon of Summer as the last to occur after the Summer Solstice. Depending on the year, the September New Moon is either the last Summer New Moon or the first Autumn New Moon
When is the new moon in September for 2026?
The peak of the September new moon is 11:27 PM EDT on September 10th. The moon will look fairly invisible the day before and after. The September 10 New Moon will be the new moon in Virgo.
Related: Learn more about the September New Moon in 2027.
Name for the September New Moon
In 2026, the September New Moon is called the New Harvest Moon because it is start of the lunar cycle for the September Full Moon.
In other years, the new moon in September will start the October Full Moon cycle, and be called the New Hunter’s Moon.
Will there be a solar eclipse in September during the new moon?
No, there will not be a solar eclipse during the September new moon in 2027. The February new moon will have an Annular Solar Eclipse and there will be a Total Solar Eclipse with the August new moon.
Will there a new supermoon in September?
No, there will not be new supermoon in September. The 2026 super new moons will be during the April New Moon, May New Moon, June New Moon, July New Moon, and August New Moon.
A new supermoon is a new moon that nearly coincides with the closest point that the Moon comes to the Earth in its orbit, called perigee. While you cannot directly see a new moon, it may leave a larger-than usual empty space in the sky. There isn’t an official definition for how close the moon must be to the Earth to be considered a supermoon. Depending on the version you use, the moon needs to be approximately 360,000 kilometers from the Earth or closer.
Moon Phases in September 2026
Below are the four core moon phases that will occur in September, including the new moon, first quarter, full moon, and last quarter. The new moon will start the lunar cycle for the September Full Moon.
| Phase | Date & Time | Season |
|---|---|---|
| September Last Quarter | Fri, September 4, 3:51 a.m. EDT | Summer |
| September New Moon 2026 | Thu, September 10, 11:27 p.m. EDT | Summer |
| September First Quarter | Fri, September 18, 4:44 p.m. EDT | Summer |
| September Full Moon 2026 | Sat, September 26, 12:49 p.m. EDT | Autumn |
New Moons this Year in 2026
The September new moon is one of the twelve new moons this year. The others are
- New Moon in January 2026 was on Jan 18th
- New Moon in February 2026 was on Feb 17th
- New Moon in March 2026 is on March 18th
- New Moon in April 2026 is in on April 17th
- New Moon in May 2026 is in on May 16th
- New Moon in June 2026 is on June 14th
- New Moon in July 2026 is on July 14th
- New Moon in August 2026 is on Aug 12th
- New Moon in October 2026 is on Oct 10th
- New Moon in November 2026 is on Nov 9th
- New Moon in December 2026 is on Dec 8th
Sources
The dates and times provided by NASA are set to United States (USA) Eastern Time for states including New York and Florida, adjusted for Daylight Saving Time for part of the year. Since you may be in a different time zone, the exact dates may shift for your calendar.