nighttime

US /ˈnaɪt.taɪm/
UK /ˈnaɪt.taɪm/
"nighttime" picture
1.

the time between evening and morning; the time of darkness between one day and the next

:
•
The city lights sparkle beautifully at nighttime.
•
It's safer to travel during the day than at nighttime.
:
nightdarkness
:
daytime