The prepositions in, on, and at can be used to indicate time and place.We use:





. at for a PRECISE TIME
in for MONTHS, YEARS, CENTURIES and LONG PERIODS OF TIME . on for DAYS and DATES and SHORTER PERIODS OF TIME. for examples : I was born in Hail on the 24th of April at 9 am in 1982

Examples : I have a meeting at 9 am.
In England, it often snows in December.
her birthday is on 20 November