Question 1

What phase is the Moon in New York on October 21, 2028?

Accepted Answer

The Moon is First Quarter, 25% illuminated, on lunar day 5. It rises at 12:25 and sets at 21:39.

Question 2

What does 25% 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 October 21, 2028?

Accepted Answer

The Moon is above the horizon for about 9h 13m, from 12:25 to 21:39, reaching at 25° 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 October 21, 2028

First Quarter

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