Local calendars

Subscribe once and each calendar appears in your phone's Calendar app, updating on its own. On iPhone, tap a Subscribe button and choose Subscribe when asked. To add one by hand: Settings, Calendar, Accounts, Add Account, Other, Add Subscribed Calendar, then enter its address.

Android: add the address in Google Calendar on the web (Other calendars, From URL), then in the Google Calendar app open Settings, choose the calendar, and turn on Sync.

These pass along each organisation's own public calendar. Made by Brett Elliff.