How can I delete holidays from my calendar?
The calendar "on my Mac" shows hundreds of entries for US holidays. For the upcoming Presidents' Day there are 147 entries. Likewise when I look back or forward the entries for each of the holidays in this category there are some as high as 157 entries. This results in as many notices of these impending events. When I tried to delete either the entries one at a time or the entire category the calendar does not react and goes into "not responding". Is there a way to delete this entire holiday category?
iMac