Amina Inloes, Amina Inloes is originally from the US and has a PhD in Islamic Studies from the University of Exeter on Shi'a hadith. She is the program leader for the MA Islamic Studies program at the... Answered 1 year ago

When we are told that there is a specific month and date, or day of the week, in the Islamic lunar calendar (or, infrequently, the Persian calendar) when something happened - for instance, "the Torah was revealed on 6 Ramadan" - this is because it is mentioned in narrations. Bihar al-Anwar includes many of these.

Mostly, we don't know the years when these things happened however.