p.m. · adverb /ˌpiːˈem/
p.m.
A1 used to refer to a time after midday but before midnight
Dictionary examples:
We'll be arriving at about 4:30 p.m.
The 6 p.m. train is usually very crowded.
Learner example:
See you tomorrow at 7 p.m. (Skills for Life (Entry 1); A1; Portuguese)