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September 2023 New Moon, the New Harvest Moon

Take a look back at the September 2023 New Moon. The September new moon was on Thursday September 14, 2023 based on the data provided by NASA. It will be the ninth new moon on the 2023 New Moon schedule.

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 2023 New Moon? Learn more about the moon’s nicknames and other facts.

Dark photo of the moon for the New Moon September 2023 date, the New Harvest Moon

The dates and times provided by NASA in the United States Eastern Time are for Eastern Standard Time (EST) and Eastern Daylight Time (EDT) for part of the year in the United States. Also below is the Coordinated Universal Time (UTC) time. Since you may be in a different time zone, the exact dates may shift for your calendar.

What was the name of the September 2023 New Moon?

One name for the September 2023 New Moon was the New Harvest Moon. The nickname is inspired by nature and agriculture as well as the timing of the Fall Equinox. In 2023 the September full moon will be called the Full Harvest Moon as it will be closer to the start of Autumn than October’s. The new moon on September 14th was be the start of the lunar cycle for the September full moon.

Which season included the September New Moon?

In 2023, the September New Moon was the last new moon of the Summer 2023 season. It was the last new moon before the Autumnal Equinox in 2023.

The Autumnal Equinox marks the beginning of astronomical autumn and the end of astronomical summer in the Northern Hemisphere.

In 2023, the Autumnal Equinox was on Saturday September 23, 2023 2:50 AM EDT or 6:50 AM UTC.

Depending on the year, the September New Moon could occur either at the end of Summer or at the beginning of Autumn depending on how the new moon lines up with the Autumnal Equinox. The new moon in September may be the start of the lunar cycle for the September or October Full moon.

When is the full moon for the 2023 New Harvest Moon?

The full moon for the September new moon will also be in September 2023. The Full Harvest Moon will be on Friday September 29, 2023 5:57 AM EDT or 9:57 AM UTC and will be the full moon in Aries.

Two interesting notes about the September New Moon in 2023:

  • This was one of the few new moon-full moon cycles that will be in the same month.
  • The new moon was near the end of the summer season. The full moon is at the beginning of autumn.

September 2023 Moon Phases in Eastern Time and UTC

Below are the lunar phases for September 2023 including the new moon, first quarter, full moon, and last quarter that are on the schedule for each month. The date and times are based on both the United States Eastern Time Zone and UTC, adjusted for daylight saving time.

Lunar PhaseUS Eastern Date & TimeUTC Date & Time
September Last QuarterSeptember 6, 2023 6:21 PM EDTSeptember 6, 2023 10:21 PM UTC
September New MoonSeptember 14, 2023 9:40 PM EDTSeptember 15, 2023 1:40 AM UTC
September First QuarterSeptember 22, 2023 3:32 PM EDTSeptember 22, 2023 7:32 PM UTC
September Full MoonSeptember 29, 2023 5:57 AM EDTSeptember 29, 2023 9:57 AM UTC

Future September New Moons

Wondering when in the future the new moons will occur in September beyond September 2023 new moon? Here’s a list through 2029.

YearDay of the weekFuture September New MoonsUTC Date
2024MondaySeptember 2, 2024 9:55 PM EDTSeptember 3, 2024 1:55 AM UTC
2025SundaySeptember 21, 2025 3:54 PM EDTSeptember 21, 2025 7:54 PM UTC
2026ThursdaySeptember 10, 2026 11:27 PM EDTSeptember 11, 2026 3:27 AM UTC
2027TuesdayAugust 31, 2027 1:41 PM EDTAugust 31, 2027 5:41 PM UTC
2028MondaySeptember 18, 2028 2:24 PM EDTSeptember 18, 2028 6:24 PM UTC
2029SaturdaySeptember 8, 2029 6:44 AM EDTSeptember 8, 2029 10:44 AM UTC

Past September New Moons

And what about the past? Here is when the new moon occurred in the past for September.

YearDay of the weekPast September New MoonsUTC Date
2023ThursdaySeptember 14, 2023 9:40 PM EDTSeptember 15, 2023 1:40 AM UTC
2022SundaySeptember 25, 2022 5:54 PM EDTSeptember 25, 2022 9:54 PM UTC
2021MondaySeptember 6, 2021 8:52 PM EDTSeptember 7, 2021 12:52 AM UTC
2020ThursdaySeptember 17, 2020 7:00 AM EDTSeptember 17, 2020 11:00 AM UTC
2019SaturdaySeptember 28, 2019 2:26 PM EDTSeptember 28, 2019 6:26 PM UTC
2018SundaySeptember 9, 2018 2:01 PM EDTSeptember 9, 2018 6:01 PM UTC
2017WednesdaySeptember 20, 2017 1:30 AM EDTSeptember 20, 2017 5:30 AM UTC

Frequently Asked Questions

Have additional questions about the September New Moons? Here are a few of the frequently asked questions to help you.

When was the September 2022 new moon?

The September 2022 New Moon was on Sunday September 25, 2022 5:54 PM EDT or 9:54 PM UTC. This was the first new moon of the Autumn 2022 season as the September 2022 new moon occurred after the Autumnal Equinox.

When was the September 2021 new moon?

The September 2021 New Moon was on Monday September 6, 2021 8:52 PM EDT or September 7, 2021 12:52 AM UTC. This was the last new moon of the Summer 2021 season as the September 2021 new moon occurred before the Autumnal Equinox.

When was the September 2020 new moon?

The September 2020 New Moon was on Thursday September 17, 2020 7:00 AM EDT or 11:00 AM UTC. This was the last new moon of the Summer 2020 season as it occurred before the Autumnal Equinox

Dark photo of the moon for the September 2023 New Moon, the New Harvest Moon