Prepositions of Time
www.perfect-english-grammar.com › prepositions-ofPrepositions of time - here's a list of the time words that need 'on', 'in', 'at' and some that don't need any preposition. Be careful - many students of English use 'on' with months (it should be 'in'), or put a preposition before 'next' when we don't need one. at. times: at 8pm, at midnight, at 6:30. holiday periods: at Christmas, at Easter.