Time Prepositions

Just a little reminder, these prepositions are hard to predict so must be learned by heart:

We say:

On Monday, Tuesday, Wednesday, etc
On the weekend
On weekdays

In January, February, etc
In the morning, the afternoon, the evening
In three days (dans 3 jours – evenement futur)
In the Spring, Summer, Autumn (Fall), Winter
In the week

At 10 O’clock
At night
At the weekend (on is OK too)