Question 1

What phase is the Moon in New York on January 31, 2030?

Accepted Answer

The Moon is New Moon, 1% illuminated, on lunar day 28. It rises at 06:09 and sets at 16:27.

Question 2

What does 1% illumination mean?

Accepted Answer

The share of the Moon's visible disc that is lit by the Sun. 0% is new moon and 100% is full moon. Illumination changes fastest near the quarters and slowest near new and full moon.

Question 3

When can the Moon be seen on January 31, 2030?

Accepted Answer

The Moon is above the horizon for about 10h 17m, from 06:09 to 16:27, reaching at 32° at culmination.

Question 4

How accurate is this moon data?

Accepted Answer

Phase, illumination and moon events are computed from astronomical ephemerides for the city's coordinates and timezone. Moonrise and moonset also depend on the local horizon and elevation.

Moon phase for January 31, 2030

New Moon

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