Then FDR changed it to the third Thursday in November to lengthen the Christmas shopping season for the merchants.
Families were split, observing Thanksgiving on different days depending whom they voted for.
Nowadays the T-day battleground is Debbie Downer vs `crazy rightwing uncle’, or else it’s Mom & Dad vs their new SJW college monsters.
Lincoln declared it the last Thursday of the month. FDR changed it to the Thursday before the last one of the month if , I believe, it fails on Nov 30.
It’s the 4th Thursday this year.