What is "iCalendar" (iCal)? Marek Hrycak March 26, 2019 08:39 Updated Follow This is a calendar data exchange format. Related articles What is ICS? What requirements must I fulfil in order to connect BedBooking with Booking.com? Why is it necessary to log in to my Google account in order to integrate with iCalendar? Can I import and export reservations exclusively via iCalendar? Which data are synchronized via iCalendar? Comments 0 comments Please sign in to leave a comment.