For starters the Presbyterians and Continental Reformed churches.
So Presbyterians and Reformed as well....interesting. Thanks for the info.
Happy....well....feast day! ;D
It should be said though, that traditional Presbyterianism-and-more-radical-protestants (Baptists and many others) have an old tradition of being down on most religious holidays. Even Christmas wasn’t a big deal among such groups until about 150 years ago—and it was banned entirely by the ancestors of Presbyterians, the Puritans, for a while in the 17th Century.
Hence even Reformation Day is not heavily emphasized in the Presbyterian circles I know...
“One person esteems one day above another; another esteems every day alike. Let each be fully convinced in his own mind.” (St. Paul in Romans 14:5)