That's general and relative so open to interpretation of listener. Most would agree simply means after dark, used when specific time not practical or necessary or to avoid a timed appointment
Tonight at 7:00 pm.
720 on CBS
8:11 pm
1.00
Tonight, if it's not cloudy or raining.
Yes, tonight is an adverb. It is an adverb of time (point in time).
Tonight at 7:00 pm.
tonight!!!!
?
There'll Be a Hot Time in the Old Town Tonight was created in 1896.
5.20 pacific time.
seven o clock tonight
i want to see you tonight and spend time with you before i leave
tonight
Yes if you are living in the eastern time zone, then tonight is Laylatul-Qadr or night of Qadr.
20.30 tonight.
8pm