Moon phase on August 20, 1977

Waxing Crescent, 33%
🌒 Waxing Crescent
Saturday, August 20, 1977 · at noon (Brasília)
Illumination: 33% Age: 5.7 days Cycle: 19%
Home → Moon phase → August 20, 1977

On Saturday, August 20, 1977 the Moon was in its waxing crescent phase, with 33% of its disk illuminated and an age of 5.7 days since the last new moon. A thin lit sliver appears low in the western sky just after sunset and sets shortly after the Sun.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌒 Waxing Crescent
Illumination33%
Moon age5.7 days
Day of the weekSaturday
Last new moonAugust 14, 1977 at 18:31
Next full moonAugust 28, 1977 at 17:09 (in 8.2 days)
Next new moonSeptember 13, 1977 at 06:22 (in 23.8 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.

WedAug 17Waxing Crescent, 8%8%Waxing CrescentThuAug 18Waxing Crescent, 15%15%Waxing CrescentFriAug 19Waxing Crescent, 23%23%Waxing Crescent
SatAug 20Waxing Crescent, 33%33%Waxing Crescent
SunAug 21First Quarter, 43%43%First QuarterMonAug 22First Quarter, 54%54%First QuarterTueAug 23Waxing Gibbous, 64%64%Waxing Gibbous

← August 19, 1977 August 21, 1977 →

About the waxing crescent

A thin lit sliver appears low in the western sky just after sunset and sets shortly after the Sun. The phase name comes from the Moon's position in its 29.53-day cycle: on August 20, 1977 it had completed 19% of the cycle that began with the new moon on August 14, 1977.

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 August 20, 1977. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on August 20, 1977?

On August 20, 1977 the Moon was in its waxing crescent phase, with 33% 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: 5.7 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after August 20, 1977 falls on August 28, 1977 at 17:09 Brasília time.

When is the next new moon after that date?

The next new moon after August 20, 1977 falls on September 13, 1977 at 06:22 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.