On my Note 8 I was able to remove unwanted holidays one an occurrence basis. My Z3 Flip doesn't seem to allow this. If I tell Calendar to deactivate Google/Holidays in United States, I loose all entries including the meetings and personal entries. The Samsung Calendar, whether it's checked or not, doesn't seem to have any affect on my calendar's display.
Is there a way to delete unwanted "holidays" from my calendar either on a year by year removal, or a remove from here to infinity?