Moon phase on February 17, 2031

Waning Crescent, 17%
🌘 Waning Crescent
Monday, February 17, 2031 · at noon (Brasília)
Illumination: 17% Age: 25.4 days Cycle: 86%
Home → Moon phase → February 17, 2031

On Monday, February 17, 2031 the Moon will be in its waning crescent phase, with 17% of its disk illuminated and an age of 25.4 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
Illumination17%
Moon age25.4 days
Day of the weekMonday
Last new moonJanuary 23, 2031 at 01:31
Next full moonMarch 9, 2031 at 01:30 (in 19.6 days)
Next new moonFebruary 21, 2031 at 12:49 (in 4.0 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.

FriFeb 14Last Quarter, 46%46%Last QuarterSatFeb 15Waning Crescent, 36%36%Waning CrescentSunFeb 16Waning Crescent, 26%26%Waning Crescent
MonFeb 17Waning Crescent, 17%17%Waning Crescent
TueFeb 18Waning Crescent, 10%10%Waning CrescentWedFeb 19Waning Crescent, 5%5%Waning CrescentThuFeb 20Waning Crescent, 1%1%Waning Crescent

← February 16, 2031 February 18, 2031 →

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 February 17, 2031 it had completed 86% of the cycle that began with the new moon on January 23, 2031.

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 February 17, 2031. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on February 17, 2031?

On February 17, 2031 the Moon will be in its waning crescent phase, with 17% 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: 25.4 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after February 17, 2031 falls on March 9, 2031 at 01:30 Brasília time.

When is the next new moon after that date?

The next new moon after February 17, 2031 falls on February 21, 2031 at 12:49 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.