Question 1

What phase is the Moon in New York on September 28, 2023?

Accepted Answer

The Moon is Full Moon, 100% illuminated, on lunar day 15. It rises at 19:00 and sets at 08:10.

Question 2

What does 100% 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 September 28, 2023?

Accepted Answer

The Moon is above the horizon for about 13h 10m, from 19:00 to 08:10, reaching at 56° 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 September 28, 2023

Full Moon

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