Moon phase on February 21, 1979

Waning Crescent, 27%
🌘 Waning Crescent
Wednesday, February 21, 1979 · at noon (Brasília)
Illumination: 27% Age: 24.4 days Cycle: 83%
Home → Moon phase → February 21, 1979

On Wednesday, February 21, 1979 the Moon was in its waning crescent phase, with 27% of its disk illuminated and an age of 24.4 days since the last new moon. Only a thin sliver is left, visible in the east shortly before dawn, as the cycle prepares to start over with the new moon.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌘 Waning Crescent
Illumination27%
Moon age24.4 days
Day of the weekWednesday
Last new moonJanuary 28, 1979 at 03:19
Next full moonMarch 13, 1979 at 18:14 (in 20.3 days)
Next new moonFebruary 26, 1979 at 13:45 (in 5.1 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.

SunFeb 18Last Quarter, 58%58%Last QuarterMonFeb 19Last Quarter, 47%47%Last QuarterTueFeb 20Waning Crescent, 36%36%Waning Crescent
WedFeb 21Waning Crescent, 27%27%Waning Crescent
ThuFeb 22Waning Crescent, 18%18%Waning CrescentFriFeb 23Waning Crescent, 10%10%Waning CrescentSatFeb 24Waning Crescent, 5%5%Waning Crescent

← February 20, 1979 February 22, 1979 →

About the waning crescent

Only a thin sliver is left, visible in the east shortly before dawn, as the cycle prepares to start over with the new moon. The phase name comes from the Moon's position in its 29.53-day cycle: on February 21, 1979 it had completed 83% of the cycle that began with the new moon on January 28, 1979.

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 February 21, 1979. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on February 21, 1979?

On February 21, 1979 the Moon was in its waning crescent phase, with 27% 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: 24.4 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after February 21, 1979 falls on March 13, 1979 at 18:14 Brasília time.

When is the next new moon after that date?

The next new moon after February 21, 1979 falls on February 26, 1979 at 13:45 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.