Moon phase on May 15, 2000

Waxing Gibbous, 89%
🌔 Waxing Gibbous
Monday, May 15, 2000 · at noon (Brasília)
Illumination: 89% Age: 11.4 days Cycle: 39%

On Monday, May 15, 2000 the Moon was in its waxing gibbous phase, with 89% of its disk illuminated and an age of 11.4 days since the last new moon. More than half of the disk is lit and the Moon already shows up in the afternoon. It stays visible most of the night, until the small hours.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌔 Waxing Gibbous
Illumination89%
Moon age11.4 days
Day of the weekMonday
Last new moonMay 4, 2000 at 01:12
Next full moonMay 18, 2000 at 04:35 (in 2.7 days)
Next new moonJune 2, 2000 at 09:14 (in 17.9 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.

← May 14, 2000 May 16, 2000 →

About the waxing gibbous

More than half of the disk is lit and the Moon already shows up in the afternoon. It stays visible most of the night, until the small hours. The phase name comes from the Moon's position in its 29.53-day cycle: on May 15, 2000 it had completed 39% of the cycle that began with the new moon on May 4, 2000.

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 May 15, 2000. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on May 15, 2000?

On May 15, 2000 the Moon was in its waxing gibbous phase, with 89% 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: 11.4 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after May 15, 2000 falls on May 18, 2000 at 04:35 Brasília time.

When is the next new moon after that date?

The next new moon after May 15, 2000 falls on June 2, 2000 at 09:14 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.