Moon phase on September 10, 2018

New Moon, 1%
🌑 New Moon
Monday, September 10, 2018 · at noon (Brasília)
Illumination: 1% Age: 0.9 days Cycle: 3%

On Monday, September 10, 2018 the Moon was in its new moon phase, with 1% of its disk illuminated and an age of 0.9 days since the last new moon. The Moon sits between the Earth and the Sun and shows us its dark side. It is practically invisible in the sky, and the nights are darkest, which is ideal for stargazing.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌑 New Moon
Illumination1%
Moon age0.9 days
Day of the weekMonday
Last new moonSeptember 9, 2018 at 15:02
Next full moonSeptember 24, 2018 at 23:53 (in 14.5 days)
Next new moonOctober 9, 2018 at 00:47 (in 28.5 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, 2018 September 11, 2018 →

About the new moon

The Moon sits between the Earth and the Sun and shows us its dark side. It is practically invisible in the sky, and the nights are darkest, which is ideal for stargazing. The phase name comes from the Moon's position in its 29.53-day cycle: on September 10, 2018 it had completed 3% of the cycle that began with the new moon on September 9, 2018.

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, 2018. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on September 10, 2018?

On September 10, 2018 the Moon was in its new moon phase, with 1% 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: 0.9 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after September 10, 2018 falls on September 24, 2018 at 23:53 Brasília time.

When is the next new moon after that date?

The next new moon after September 10, 2018 falls on October 9, 2018 at 00:47 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.