Moon phase on July 23, 1984

Waning Crescent, 25%
🌘 Waning Crescent
Monday, July 23, 1984 · at noon (Brasília)
Illumination: 25% Age: 24.5 days Cycle: 83%
Home → Moon phase → July 23, 1984

On Monday, July 23, 1984 the Moon was in its waning crescent phase, with 25% of its disk illuminated and an age of 24.5 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
Illumination25%
Moon age24.5 days
Day of the weekMonday
Last new moonJune 29, 1984 at 00:18
Next full moonAugust 11, 1984 at 12:44 (in 19.0 days)
Next new moonJuly 28, 1984 at 08:51 (in 4.9 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.

FriJul 20Last Quarter, 56%56%Last QuarterSatJul 21Last Quarter, 45%45%Last QuarterSunJul 22Waning Crescent, 35%35%Waning Crescent
MonJul 23Waning Crescent, 25%25%Waning Crescent
TueJul 24Waning Crescent, 16%16%Waning CrescentWedJul 25Waning Crescent, 9%9%Waning CrescentThuJul 26Waning Crescent, 4%4%Waning Crescent

← July 22, 1984 July 24, 1984 →

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 July 23, 1984 it had completed 83% of the cycle that began with the new moon on June 29, 1984.

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 July 23, 1984. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on July 23, 1984?

On July 23, 1984 the Moon was in its waning crescent phase, with 25% 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: 24.5 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after July 23, 1984 falls on August 11, 1984 at 12:44 Brasília time.

When is the next new moon after that date?

The next new moon after July 23, 1984 falls on July 28, 1984 at 08:51 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.