Moon phase on September 23, 2002

Waning Gibbous, 96%
🌖 Waning Gibbous
Monday, September 23, 2002 · at noon (Brasília)
Illumination: 96% Age: 16.5 days Cycle: 56%

On Monday, September 23, 2002 the Moon was in its waning gibbous phase, with 96% of its disk illuminated and an age of 16.5 days since the last new moon. The lit part starts to shrink. The Moon rises a few hours after dusk and is still in the sky when day breaks.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌖 Waning Gibbous
Illumination96%
Moon age16.5 days
Day of the weekMonday
Last new moonSeptember 7, 2002 at 00:10
Next full moonOctober 21, 2002 at 04:20 (in 27.7 days)
Next new moonOctober 6, 2002 at 08:17 (in 12.8 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 22, 2002 September 24, 2002 →

About the waning gibbous

The lit part starts to shrink. The Moon rises a few hours after dusk and is still in the sky when day breaks. The phase name comes from the Moon's position in its 29.53-day cycle: on September 23, 2002 it had completed 56% of the cycle that began with the new moon on September 7, 2002.

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 23, 2002. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on September 23, 2002?

On September 23, 2002 the Moon was in its waning gibbous phase, with 96% 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: 16.5 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after September 23, 2002 falls on October 21, 2002 at 04:20 Brasília time.

When is the next new moon after that date?

The next new moon after September 23, 2002 falls on October 6, 2002 at 08:17 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.