French Reference Grammar - Date, numbers and weather

The date

Apart from 'le premier' ('the first'), ordinal numbers* are not used for dates. Instead, cardinal numbers are used. There is no word for 'of' when giving the date in French. Thus: 

'le premier mars'

'le deux mars'

'le dix-sept mars'

'le trente mars' etc.

To say 'on' with a date, simply use the forms given above. French does not use a word for 'on' in expressions which give the date. Thus, 'le premier avril' can also mean 'on the first of April'.

* Note: Cardinal numbers are 'one', 'two', three', etc. Ordinal numbers are 'first', 'second', 'third, etc.