pcal2md

This tools reads a calendar file in pcal format and generates a calendar in Markdown. Each month is formatted as a tabel.

Using the option -i will write a .ics file instead.

Google Calendar sync settings

Log in with your Google account and enter thusURL:

https://calendar.google.com/calendar/u/0/syncselect

On this page the sync settings for all the calendars can be changed.