When will Christmas and New Year's Day again fall on Saturday?

Eventually, yes. ( by the way if you are think ing of the thearoy that it will not fall on a sat. for like 250,000,000 years, it is a myth, we will have one in abt 7 years frm what i heard.

Christmas and New Year will Fall on Saturday on:

December 25, 2021

January 1, 2022

Hope that helps!!