Moon phase on November 15, 1999

First Quarter, 50%
🌓 First Quarter
Monday, November 15, 1999 · at noon (Brasília)
Illumination: 50% Age: 7.4 days Cycle: 25%

On Monday, November 15, 1999 the Moon was in its first quarter phase, with 50% of its disk illuminated and an age of 7.4 days since the last new moon. Half of the disk is lit, about a week after the new moon. The Moon is easy to see in the early evening and sets around midnight.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌓 First Quarter
Illumination50%
Moon age7.4 days
Day of the weekMonday
Last new moonNovember 8, 1999 at 01:53
Next full moonNovember 23, 1999 at 05:04 (in 7.7 days)
Next new moonDecember 7, 1999 at 20:32 (in 22.4 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.

← November 14, 1999 November 16, 1999 →

About the first quarter

Half of the disk is lit, about a week after the new moon. The Moon is easy to see in the early evening and sets around midnight. The phase name comes from the Moon's position in its 29.53-day cycle: on November 15, 1999 it had completed 25% of the cycle that began with the new moon on November 8, 1999.

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 November 15, 1999. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on November 15, 1999?

On November 15, 1999 the Moon was in its first quarter phase, with 50% 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: 7.4 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after November 15, 1999 falls on November 23, 1999 at 05:04 Brasília time.

When is the next new moon after that date?

The next new moon after November 15, 1999 falls on December 7, 1999 at 20:32 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.