Everyone knows we use “in” for these terms
In the evening, In the morning, in the afternoon. And for days, we use the preposition “on”, on Saturday, on Monday, on Tuesday,...so on.
With respect to both of them being “nouns”, Sunday and evening.
But I am confused of using them together.
- I met one of my friends on Sunday evening.
Why do we use ON instead of:
I met one of my friends in the evening of Sunday.
I met one of my friends in Sunday evening
Here, in the last sentence, I used IN Sunday evening, as we do with “On school vocation”; ON related to vocation, not school. So here IN related to evening, not Sunday.