Answer:

moonset

Answer	Crossword Clue
MOONSET	Lunar descent
MOONSET	Time of day
MOONSET	When it occurs depends on latitude

MOONSET	Regular lunar event
MOONSET	When a satellite vanishes?
MOONSET	Astronomical event
MOONSET	Astronomical observance
MOONSET	Astronomical observation
MOONSET	When satellite viewers stop watching?
MOONSET	Nautical almanac listing
MOONSET	Descent of Luna.

MOONSET	Pre-dawn phenomenon.
MOONSET	Lunar occurrence.
MOONSET	Lunar phenomenon.
MOONSET	Astrophysicist's concern.
MOONSET	Celestial event
MOONSET	Neil Armstrong et al., in a way
MOONSET	Horizon sight
MOONSET	Luna's disappearance

MOONSET	Lunar phenomenon
MOONSET	Luna's descent below the horizon
MOONSET	Evening event
MOONSET	Astronomical phenomenon
MOONSET	Nighttime view
MOONSET	Lunar disappearance
MOONSET	Generally ignored astronomical occurrence
MOONSET	Horizon happening

MOONSET	When the Night darkens
MOONSET	Nighttime astronomical phenomenon
MOONSET	When the night darkens
MOONSET	Nighttime event in the western sky