Life's been so upside down this last decade that we do the known ones. Such as St Patrick's Day, Easter, Pancake Day and Christmas. Always missing Thanksgiving (the one usually in October and known as Harvest Festival too).
No worries, got it on Calendars this year, need turkey Roast in preparation for holiday turkey end of year.
Through friends and acquaintances, learned of many more days of observance. However, we've slimmed down to a few plus birthdays.