gallery opening hours
Refers to the hours during which an art gallery or exhibition space is open to the public.
The gallery opening hours are from 10 a.m. to 6 p.m.
開館時間 is used for opening hours of a public facility like a library or museum, while 開廊時間 specifically refers to a gallery.
Compound of 開廊 (gallery opening) and 時間 (time, hours).