• ​https://tools.ietf.org/html/rfc5545​

• ​https://en.wikipedia.org/wiki/ICalendar​

• ​https://icalendar.org/​

• ​https://github.com/aizatto/ical-debugger​

  • ​https://aizatto.github.io/ical-debugger/​

Best Practices

Use VALARMs to set reminders ( 3.6.6, page 70)

A "VALARM" calendar component is a grouping of component properties that is a reminder or alarm for an event or a to-do. For example, it may be used to define a reminder for a pending event or an overdue to-do.

Example:

BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-PT5M
DESCRIPTION:This is an event reminder
END:VALARM

​