Yahoo Groups has this calendar feature. You can set events to repeat, which is useful, as events sometimes do. Except, for some reason, when you want the event to repeat on specific days of the week, you have to choose one of the following
Monday, Wednesday and Friday;
Tuesday and Thursday;
Monday, Thursday and Friday; or
Saturday and Sunday
So if, like me, you have an event that occurs on one day out of the week — in this case, Sunday but not Saturday — you’re sort of out of luck.
Addendum: Never mind. I am stupid. You can set events to repeat once every week.