[drstevej]

Thanks. Always curious about these non-biblical dates.

***They take this date as being exactly nine months after the Feast of the Immaculate Conception, which is December 8th. ***

And that leads to the question of how they date the Immaculate Conception (Out of charity I won't question on this thread how they arrived at that doctrine)?

[Pyro7480]

If I remember correctly, the celebration of the feast on that specific date goes all the way back to the Fourth Century (at least.)

[Tantumergo]

"Always curious about these non-biblical dates."

A lot of these "non-biblical" dates were derived by the Fathers from OT typology. I can't remember the reason for 8th December as date for the Immaculate Conception, but I have got the typology for Jesus' conception on 15th March somewhere. (If you are interested I could dig it out - as its you!)

Your old friend Gerry Matatics is the expert on these things!

Hope all is well with you!

[As you well know...]

Tradition, which is equal to Scripture, for Catholics, the Body of Christ.