Moon phase on July 21, 1950

First Quarter, 40%
🌓 First Quarter
Friday, July 21, 1950 · at noon (Brasília)
Illumination: 40% Age: 6.4 days Cycle: 22%
Home → Moon phase → July 21, 1950

On Friday, July 21, 1950 the Moon was in its first quarter phase, with 40% of its disk illuminated and an age of 6.4 days since the last new moon. Half of the disk is lit, about a week after the new moon. The Moon is easy to see in the early evening and sets around midnight.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌓 First Quarter
Illumination40%
Moon age6.4 days
Day of the weekFriday
Last new moonJuly 15, 1950 at 02:04
Next full moonJuly 29, 1950 at 01:17 (in 7.6 days)
Next new moonAugust 13, 1950 at 13:47 (in 23.1 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.

TueJul 18Waxing Crescent, 13%13%Waxing CrescentWedJul 19Waxing Crescent, 21%21%Waxing CrescentThuJul 20Waxing Crescent, 30%30%Waxing Crescent
FriJul 21First Quarter, 40%40%First Quarter
SatJul 22First Quarter, 50%50%First QuarterSunJul 23Waxing Gibbous, 61%61%Waxing GibbousMonJul 24Waxing Gibbous, 71%71%Waxing Gibbous

← July 20, 1950 July 22, 1950 →

About the first quarter

Half of the disk is lit, about a week after the new moon. The Moon is easy to see in the early evening and sets around midnight. The phase name comes from the Moon's position in its 29.53-day cycle: on July 21, 1950 it had completed 22% of the cycle that began with the new moon on July 15, 1950.

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 21, 1950. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on July 21, 1950?

On July 21, 1950 the Moon was in its first quarter phase, with 40% 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: 6.4 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after July 21, 1950 falls on July 29, 1950 at 01:17 Brasília time.

When is the next new moon after that date?

The next new moon after July 21, 1950 falls on August 13, 1950 at 13:47 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.