With respect, Jon, that's very much a case of altering the "facts" retrospectively

. You know better than I do that the Jewish festival of Hannukah is a very minor festival indeed and one that one does not take "time off" for - ie it's not a "holiday". The fact that it occurs at a similar time to the Christian festival of Christmas is a pure coincidence.
As for "Kwanza" - that's a purely "invented" holiday which nobody outside the USA has ever heard of

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