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.
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.