Moon phase on February 12, 1985

Last Quarter, 47%
🌗 Last Quarter
Tuesday, February 12, 1985 · at noon (Brasília)
Illumination: 47% Age: 22.5 days Cycle: 76%
Home → Moon phase → February 12, 1985

On Tuesday, February 12, 1985 the Moon was in its last quarter phase, with 47% of its disk illuminated and an age of 22.5 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
Illumination47%
Moon age22.5 days
Day of the weekTuesday
Last new moonJanuary 20, 1985 at 23:28
Next full moonMarch 6, 1985 at 23:13 (in 22.5 days)
Next new moonFebruary 19, 1985 at 15:42 (in 7.2 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.

SatFeb 9Waning Gibbous, 77%77%Waning GibbousSunFeb 10Waning Gibbous, 68%68%Waning GibbousMonFeb 11Last Quarter, 58%58%Last Quarter
TueFeb 12Last Quarter, 47%47%Last Quarter
WedFeb 13Waning Crescent, 37%37%Waning CrescentThuFeb 14Waning Crescent, 27%27%Waning CrescentFriFeb 15Waning Crescent, 18%18%Waning Crescent

← February 11, 1985 February 13, 1985 →

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 February 12, 1985 it had completed 76% of the cycle that began with the new moon on January 20, 1985.

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 12, 1985. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on February 12, 1985?

On February 12, 1985 the Moon was in its last quarter phase, with 47% 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: 22.5 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after February 12, 1985 falls on March 6, 1985 at 23:13 Brasília time.

When is the next new moon after that date?

The next new moon after February 12, 1985 falls on February 19, 1985 at 15:42 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.