Moon phase on December 12, 1987

Last Quarter, 59%
🌗 Last Quarter
Saturday, December 12, 1987 · at noon (Brasília)
Illumination: 59% Age: 21.3 days Cycle: 72%
Home → Moon phase → December 12, 1987

On Saturday, December 12, 1987 the Moon was in its last quarter phase, with 59% of its disk illuminated and an age of 21.3 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 age21.3 days
Day of the weekSaturday
Last new moonNovember 21, 1987 at 04:33
Next full moonJanuary 3, 1988 at 23:41 (in 22.5 days)
Next new moonDecember 20, 1987 at 16:26 (in 8.2 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.

WedDec 9Waning Gibbous, 86%86%Waning GibbousThuDec 10Waning Gibbous, 78%78%Waning GibbousFriDec 11Waning Gibbous, 69%69%Waning Gibbous
SatDec 12Last Quarter, 59%59%Last Quarter
SunDec 13Last Quarter, 48%48%Last QuarterMonDec 14Waning Crescent, 37%37%Waning CrescentTueDec 15Waning Crescent, 28%28%Waning Crescent

← December 11, 1987 December 13, 1987 →

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 December 12, 1987 it had completed 72% of the cycle that began with the new moon on November 21, 1987.

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 December 12, 1987. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on December 12, 1987?

On December 12, 1987 the Moon was 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: 21.3 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after December 12, 1987 falls on January 3, 1988 at 23:41 Brasília time.

When is the next new moon after that date?

The next new moon after December 12, 1987 falls on December 20, 1987 at 16:26 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.