Moon phase on March 17, 2001

Last Quarter, 50%
🌗 Last Quarter
Saturday, March 17, 2001 · at noon (Brasília)
Illumination: 50% Age: 22.3 days Cycle: 75%
Home → Moon phase → March 17, 2001

On Saturday, March 17, 2001 the Moon was in its last quarter phase, with 50% of its disk illuminated and an age of 22.3 days since the last new moon. Half of the disk is lit again, on the opposite side from the first quarter. The Moon rises around midnight and is visible in the morning.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌗 Last Quarter
Illumination50%
Moon age22.3 days
Day of the weekSaturday
Last new moonFebruary 23, 2001 at 05:22
Next full moonApril 8, 2001 at 00:22 (in 21.5 days)
Next new moonMarch 24, 2001 at 22:22 (in 7.4 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.

WedMar 14Waning Gibbous, 80%80%Waning GibbousThuMar 15Waning Gibbous, 71%71%Waning GibbousFriMar 16Last Quarter, 61%61%Last Quarter
SatMar 17Last Quarter, 50%50%Last Quarter
SunMar 18Last Quarter, 40%40%Last QuarterMonMar 19Waning Crescent, 30%30%Waning CrescentTueMar 20Waning Crescent, 20%20%Waning Crescent

← March 16, 2001 March 18, 2001 →

About the last quarter

Half of the disk is lit again, on the opposite side from the first quarter. The Moon rises around midnight and is visible in the morning. The phase name comes from the Moon's position in its 29.53-day cycle: on March 17, 2001 it had completed 75% of the cycle that began with the new moon on February 23, 2001.

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 March 17, 2001. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on March 17, 2001?

On March 17, 2001 the Moon was in its last quarter phase, with 50% 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: 22.3 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after March 17, 2001 falls on April 8, 2001 at 00:22 Brasília time.

When is the next new moon after that date?

The next new moon after March 17, 2001 falls on March 24, 2001 at 22:22 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.