Question 1

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

Accepted Answer

The Moon is New Moon, 3% illuminated, on lunar day 27. It rises at 04:00 and sets at 18:54.

Question 2

What does 3% 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 May 21, 2028?

Accepted Answer

The Moon is above the horizon for about 14h 54m, from 04:00 to 18:54, reaching at 69° 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 May 21, 2028

New Moon

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