New answers tagged ical
While not having tested against mainstream or others web calendars, the RFC specifies integers to be either positive or negative and RFC5545 section 3.3.8. Integer specifies: The valid range for "integer" is -2147483648 to 2147483647. If the sign is not specified, then the value is assumed to be positive.
The official source is https://support.google.com/calendar/answer/37100?hl=en&ref_topic=1672445 Note: It may take up to 8 hours for changes in ICS feeds to reflect in your Google Calendar.
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