I don’t have an answer for you, I just want to tell you that the plural of schema is schemata.

*regressive

There is already some debate about what time of year the birth actually happened. Most people agree that regardless of the actual day, it probably wasn’t Dec 25 (or the equivalent if using other calendars). That’s just the one that people agreed to use.

Not exactly. Most Christian holidays are redefined existing holidays. Christmas was “oh everyone already celebrates a feast around midwinter, let’s make it a celebration of the birth of Jesus so we can still do the celebration but in a Christian way”.

I’m sure Israel would be happy to rebuild homes, schools, and hospitals. For Israelis, though.