Well you can tell by when it's dark and when it's light or if you mean by time, PM means night and AM means morning.
That varies with the time of year. About now its about the same as night time.
It depends on when you asked that. It's day-time right now.
Is it nighttime in Honolulu now
They come out rarely at day time but sometimes at night. You can get Leprechauns to come out at day and night only on St. Patricks Day.
Usually night.
Day or Night
You can say "good night" when it is your day time, if you are talking to a person who is in a country where it is night time. When it is day time in Ireland, it is night time in Australia and New Zealand, and other places.
night
It is night time.
night time is coming now.
Daytime is when the sun is out and well it is the time of day night time is when it is night and dark because the sun is not reflecting that side unlike the other the other side so night time is basically night and day time is day
Muscles don't build at a certain time of the day. Muscles will build better at night, if you exercised at day time and then were ASLEEP at night.