Moon phase on October 27, 1989

Waning Crescent, 5%
🌘 Waning Crescent
Friday, October 27, 1989 · at noon (Brasília)
Illumination: 5% Age: 27.7 days Cycle: 93%

On Friday, October 27, 1989 the Moon was in its waning crescent phase, with 5% of its disk illuminated and an age of 27.7 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
Illumination5%
Moon age27.7 days
Day of the weekFriday
Last new moonSeptember 29, 1989 at 18:47
Next full moonNovember 13, 1989 at 03:51 (in 16.7 days)
Next new moonOctober 29, 1989 at 13:27 (in 2.1 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.

← October 26, 1989 October 28, 1989 →

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 October 27, 1989 it had completed 93% of the cycle that began with the new moon on September 29, 1989.

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 October 27, 1989. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on October 27, 1989?

On October 27, 1989 the Moon was in its waning crescent phase, with 5% 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: 27.7 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after October 27, 1989 falls on November 13, 1989 at 03:51 Brasília time.

When is the next new moon after that date?

The next new moon after October 27, 1989 falls on October 29, 1989 at 13:27 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.