- https://support.google.com/calendar/answer/37111
- https://github.com/JochenHayek/misc/blob/master/diary/ics2diary.pl – my little and incomplete utility to convert ICS to “emacs diary” (my life circles around updates to my emacs diary) – I created that utility in the context of “Deutsche Bahn” (train) traveling schedules – all those travelling schedules most necessarily go to my emacs diary