u/Illustrious-Pea1732

It has been a long time since I have posted for help here, since I am fortunate enough for being able to hop in an exchange to the University of Sheffields, and pick up a Latin course meanwhile.

However, even with my increased knowledge, I am still stuck with this line in chapter 42:

"...eique sacra omnia scripta tradidit, quibus hostiis, quibus diebus, ad quae templa sacra fierent."

First, why subjunctive for the "fierent"? Is it a relative purpose clause? So the purpose of Numa entrusting him the scriptures is for those scriptures made the temples sacred?

Second, what form are the "quibus.."s in? I can't think of a way to understand them either in ablative or dative, especially the "quibus diebus".

Thanks in advance for any help.