I just looked at Reclaim. That's exactly what I tried to do by creating a Google account just to join together 6 other calendars, and that's the calendar I sync

I just looked at Reclaim. That's exactly what I tried to do by creating a Google account just to join together 6 other calendars, and that's the calendar I sync to my phone (it works but... meh. definitely a hack. For example, the annual holiday calendar is repeated about 18 times somehow). Definitely taking a serious look at Reclaim.