Question 1

What phase is the Moon in New York on December 1, 2025?

Accepted Answer

The Moon is First Quarter, 50% illuminated, on lunar day 13. It rises at 14:26 and sets at 05:29.

Question 2

What does 50% 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 December 1, 2025?

Accepted Answer

The Moon is above the horizon for about 15h 3m, from 14:26 to 05:29, reaching at 70° 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 December 1, 2025

First Quarter

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