in/on the morning

[bea32]

Hello everyone,

I was doing some exercises and found the sentence below;

"My friend arrived early in the morning of Sunday, the 25th."

In its explanation, it is said that the sentence's focusing on "Time" and "the morning" , so use "in", or something like that in Japanese.

I know you use "in" for parts of the day, but I think I read some grammer book and it is said that if you want to mention about a particular day, you use "on" (I'm not sure which grammer book I read). And I actually found an example sentence "On the evening of May the 1st" in the Oxford Dictionary.

I also had a chance to ask someone from England and US, and the english chose "on" for the sentence, but the American chose "in" for that.

So I was very much confused. I think it is not a big problem, but I want to make it sure which is correct and/or common and also want to know rules regarding this matter, if any.

Thank you very much for your help in advance!!

[Barb_D]

Yes, if you want to refer to any part of the day on a specific day, use "on."

He'll arrive on the morning of the 25th.

But: He'll arrive on the 25th, sometime in the late morning. That's because you're adding the part about "in the morning" as additinal information.

When the word order is "on the [time of day] on the [date]" do use "on."