Moon phase on September 13, 2026

Waxing Crescent, 7%
🌒 Waxing Crescent
Sunday, September 13, 2026 · at noon (Brasília)
Illumination: 7% Age: 2.5 days Cycle: 8%

On Sunday, September 13, 2026 the Moon was in its waxing crescent phase, with 7% of its disk illuminated and an age of 2.5 days since the last new moon. A thin lit sliver appears low in the western sky just after sunset and sets shortly after the Sun.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌒 Waxing Crescent
Illumination7%
Moon age2.5 days
Day of the weekSunday
Last new moonSeptember 11, 2026 at 00:27
Next full moonSeptember 26, 2026 at 13:49 (in 13.1 days)
Next new moonOctober 10, 2026 at 12:50 (in 27.0 days)

The Moon on the surrounding days

Compare the phase and illumination over the three days before and after. Click a day to open its page.

← September 12, 2026 September 14, 2026 →

About the waxing crescent

A thin lit sliver appears low in the western sky just after sunset and sets shortly after the Sun. The phase name comes from the Moon's position in its 29.53-day cycle: on September 13, 2026 it had completed 8% of the cycle that began with the new moon on September 11, 2026.

Looking for another date, such as a birthday? Use the Moon phase on the day I was born tool, see the Moon phase today page with the lunar calendar, or find the day of the week of September 13, 2026. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on September 13, 2026?

On September 13, 2026 the Moon was in its waxing crescent phase, with 7% of the disk lit (calculated at noon Brasília time).

How old is the Moon on that date?

The age is the time since the last new moon: 2.5 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after September 13, 2026 falls on September 26, 2026 at 13:49 Brasília time.

When is the next new moon after that date?

The next new moon after September 13, 2026 falls on October 10, 2026 at 12:50 Brasília time.

How is the Moon phase calculated?

With Jean Meeus's astronomical formulas for the instants of new, quarter and full moon. The age comes from the time since the last new moon and the illumination is (1 − cos(2π × cycle fraction)) / 2.

Is the phase the same everywhere in the world?

Yes, the phase and the illuminated percentage are the same across the planet at any given instant. Only the orientation changes: in the southern hemisphere a waxing Moon is lit on the left, in the northern one on the right.