Moon phase on September 10, 2028

Last Quarter, 59%
🌗 Last Quarter
Sunday, September 10, 2028 · at noon (Brasília)
Illumination: 59% Age: 21.2 days Cycle: 72%

On Sunday, September 10, 2028 the Moon will be in its last quarter phase, with 59% of its disk illuminated and an age of 21.2 days since the last new moon. Half of the disk is lit again, on the opposite side from the first quarter. The Moon rises around midnight and is visible in the morning.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌗 Last Quarter
Illumination59%
Moon age21.2 days
Day of the weekSunday
Last new moonAugust 20, 2028 at 07:44
Next full moonOctober 3, 2028 at 13:25 (in 23.1 days)
Next new moonSeptember 18, 2028 at 15:24 (in 8.1 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 9, 2028 September 11, 2028 →

About the last quarter

Half of the disk is lit again, on the opposite side from the first quarter. The Moon rises around midnight and is visible in the morning. The phase name comes from the Moon's position in its 29.53-day cycle: on September 10, 2028 it had completed 72% of the cycle that began with the new moon on August 20, 2028.

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 10, 2028. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on September 10, 2028?

On September 10, 2028 the Moon will be in its last quarter phase, with 59% 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: 21.2 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after September 10, 2028 falls on October 3, 2028 at 13:25 Brasília time.

When is the next new moon after that date?

The next new moon after September 10, 2028 falls on September 18, 2028 at 15:24 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.