Oct 30, 2020聽路 "on the 5th of November" is practically just removing the word day from the reference. As in "on the 5th (day) of November." It is used everywhere and even though it could be understood a.
There is no such equivalent phrase that I know of for any English-speaking country. However thanks to the prevalence of US media, the phrase "plead the fifth" or "take the fifth" is widely recognized.
"5th May" would be the most traditional way to write this date. I have never seen "of" used in a written date, except in extremely archaic constructions such as legal contracts "signed and witnessed this.
Sep 7, 2014聽路 While helping my son, who happens to be in the 5th grade, with his English grammar, I have realized that I am confused. The following sentence, that I gave him as an exercise, he has.
Oct 4, 2020聽路 Again for example "In the first three days of September 2020" but "between the 2nd and the 5th of September 2020". When we are talking about a single date we say "on" because a single.