We write the date in English in different ways. The most common way in British English is to write the day of the month first (ordinal numbers), then the month (starting with a capital letter) and then the year:
7th September, 2021
*You can write first the day of the week.
Monday, 1st December, 1997
When we say dates in English , we say ‘the’ before the number followed by ‘of’. For example,
It’s the first of January.