Prototypical prepositions are from and since (but see note under Time about the ambiguity of since):

• The show will run from 10 a.m. to 2 p.m. 001

• a document dating from the thirteenth century 002

Note that simple Time is used with verbs like start and begin: the event directly described by the PP is the starting, not the thing that started.

• The show will start at 10 a.m. (Time) 003