I’m often confused when I speak about times and dates. What is the rule for using on, in, and at in the following sentences?
- I will do it ___ Tuesday.
- We married ___ March.
- He returned ___ the same day.
- Every day ___ the same time, I walk the dog.
Times usually get at.
Everyday at the same time I take a walk.
At 3 PM, I will be having a late lunch.
Days usually get on.
I will do it on Tuesday.
He returned on the same day.
Months usually get in.
We married in March.
From what I know, confirmed by here:
Though I have seen at for days in the plural (e.g. at Mondays), but it looks rather informal in my opinion.