GriCal - Grid Calendar
GriCal (which is a short form for Grid Calendar) is an open web where people store quickly a few information about interesting events, so that others can also easily know about them. GriCal also makes easy and fast to get notified and store interesting events in its own external calendars.
Thu Aug 22 14:00:36 2019 - permalink -
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https://grical.org/h/help/#groups