Moon phase on February 23, 1973

Waning Gibbous, 70%
🌖 Waning Gibbous
Friday, February 23, 1973 · at noon (Brasília)
Illumination: 70% Age: 20.2 days Cycle: 68%
Home → Moon phase → February 23, 1973

On Friday, February 23, 1973 the Moon was in its waning gibbous phase, with 70% of its disk illuminated and an age of 20.2 days since the last new moon. The lit part starts to shrink. The Moon rises a few hours after dusk and is still in the sky when day breaks.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌖 Waning Gibbous
Illumination70%
Moon age20.2 days
Day of the weekFriday
Last new moonFebruary 3, 1973 at 06:22
Next full moonMarch 18, 1973 at 20:33 (in 23.4 days)
Next new moonMarch 4, 1973 at 21:07 (in 9.4 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.

TueFeb 20Waning Gibbous, 94%94%Waning GibbousWedFeb 21Waning Gibbous, 87%87%Waning GibbousThuFeb 22Waning Gibbous, 80%80%Waning Gibbous
FriFeb 23Waning Gibbous, 70%70%Waning Gibbous
SatFeb 24Last Quarter, 60%60%Last QuarterSunFeb 25Last Quarter, 50%50%Last QuarterMonFeb 26Waning Crescent, 39%39%Waning Crescent

← February 22, 1973 February 24, 1973 →

About the waning gibbous

The lit part starts to shrink. The Moon rises a few hours after dusk and is still in the sky when day breaks. The phase name comes from the Moon's position in its 29.53-day cycle: on February 23, 1973 it had completed 68% of the cycle that began with the new moon on February 3, 1973.

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 23, 1973. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on February 23, 1973?

On February 23, 1973 the Moon was in its waning gibbous phase, with 70% 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: 20.2 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after February 23, 1973 falls on March 18, 1973 at 20:33 Brasília time.

When is the next new moon after that date?

The next new moon after February 23, 1973 falls on March 4, 1973 at 21:07 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.