PREPOSITIONS OF TIME

PREPOSITIONS OF TIME
AT - IN- ON - NO PREPOSITION

When do we use AT?

We use at with clock times, religious festivals, mealtimes and other specific times.
Examples:

at 6 o'clock
at Christmas / Easter
at breakfast / lunch / dinner / dinner time
at night / the weekend / weekends / half-term

When do we use IN?

We use in with seasons, years and centuries, periods in history, months, parts of the day and certain expressions of future time.
Examples:

in (the) summer / (the) winter
in 1955 / the twenty-first century / the next century
in the Middle Ages
in March / December
in the morning(s) / the afternoon(s) / the evening(s)
in the near future / the next few days / the coming months / two weeks' time / a year from now / a few minutes

When do we use ON?

We use on with days, dates and special days - in fact, any expression which contains the word day or is part of a specific named day.
Examples:

on Sunday / Thursday
on March 19th 1955 / January 1st
on Christmas Day / New Year's Eve / my birthday / our wedding anniversary / Monday morning / Saturday night

When do we use NO PREPOSITION?

We use no preposition with the following time expressions:

Time expressions with this e.g. this afternoon / week / month / year / century
Time expressions with last e.g. last night / week / March / year / Friday
Time expressions with next e.g. next week / month / year / Sunday
Tomorrow and time expression with tomorrow e.g. tomorrow night / morning
Yesterday and time expression with yesterday e.g. yesterday afternoon / morning

We use no preposition
with other specific days or weeks in a month on a calendar when you do
not say the name of the day (e.g. Monday) or the date (the 19th):
Examples:

today / the day after tomorrow / the day before yesterday / the week / before last / the week after next

We use no preposition with time expressions that contain every, all, each, some, any and one

Examples:

We go on holiday every August
I stayed at home all weekend
He spends each Christmas with his parents
Some weekends I stay in and work
I can see you any evening this week
One Saturday night we'll try that new restaurant