Moon phase on August 4, 1958

Waning Gibbous, 81%
🌖 Waning Gibbous
Monday, August 4, 1958 · at noon (Brasília)
Illumination: 81% Age: 18.9 days Cycle: 64%

On Monday, August 4, 1958 the Moon was in its waning gibbous phase, with 81% of its disk illuminated and an age of 18.9 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
Illumination81%
Moon age18.9 days
Day of the weekMonday
Last new moonJuly 16, 1958 at 15:33
Next full moonAugust 29, 1958 at 02:53 (in 24.6 days)
Next new moonAugust 15, 1958 at 00:32 (in 10.5 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.

← August 3, 1958 August 5, 1958 →

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 August 4, 1958 it had completed 64% of the cycle that began with the new moon on July 16, 1958.

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 4, 1958. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on August 4, 1958?

On August 4, 1958 the Moon was in its waning gibbous phase, with 81% 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: 18.9 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after August 4, 1958 falls on August 29, 1958 at 02:53 Brasília time.

When is the next new moon after that date?

The next new moon after August 4, 1958 falls on August 15, 1958 at 00:32 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.