General response:
* Aujourd'hui, c'est [day of the week]. (Today is [day of the week].)
Example:
* Quel jour est-ce? (What day is it?)
* Aujourd'hui, c'est mercredi. (Today is Wednesday.)
You can also be more specific:
* C'est le [date] [month]. (It's the [date] of [month].)
Example:
* Quel jour est-ce? (What day is it?)
* C'est le 15 octobre. (It's the 15th of October.)
Informal response:
* C'est [day of the week]. (It's [day of the week].)
Example:
* Quel jour est-ce? (What day is it?)
* C'est mercredi. (It's Wednesday.)
Remember to replace the bracketed information with the correct date and day of the week.