I know, for a specific date, it is used on: On 16 May 2016.
I also know, when you refer to a month or year alone you use in: In June, In 2000
But I saw in internet some sources that when you put together a month and the year, they use both "on" and "in". I suppose that the correct form is In May of 2000.
Which form is correct? On May of 2000 or in May of 2000?
Also, is it necessary to put "of" or not? For example: May 2000 or May of 2000
Best Answer
When talking about a specific date you use "on". For example,
When talking about a month, you use "in". For example,
And if you have a particular duration of time that you want to talk about, you can use either "during" or "from-to". For example,
OR
Hope that helps.