At, In, On

A student from Turkey wanted help with “in, at, on”.

“In, at, on” are used to tell when something happens. These words are prepositions of time. Prepositions of time to explain when something happens.

Prepositions are words that connect the nouns—people, places, things, locations—of a sentence to other words within a sentence. Prepositions are usually placed directly in front of nouns.


  • At to show a specific point in time. For example, “at night”, “at dinner”, etc.
  • In to show parts of the day, month, seasons, years. For example, “in the morning”, “in June”, “in winter”, etc.
  • On to show dates, days of the week, single day events. For example, “on Sunday”, “on the 12th “, etc.