Q: Given that Masses for Various Needs are allowed on the day before Thanksgiving, may the Thanksgiving Day Mass itself be used… or should one use MVNO #49 instead?
As I read it, it looks to me as if the proper Mass for Thanksgiving can only be used on the Thursday.
A: I think it’s fine to use the Thanksgiving Day Mass on Wednesday—presuming that there is no other Mass on Thursday.
I realize it appears in the missal in the sanctoral cycle (!), but it is essentially a Mass for Various Needs and Occasions.