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Time Zones in Calendar Invites

How to set multi-time-zone meetings in Google Calendar, Outlook, and Apple Calendar without confusion.

Calendar apps convert zones automatically, but **how the organizer sets the event** determines whether attendees misread it. Top mistakes: local time only, or ambiguous abbreviations like EST/CST. This applies to Google Calendar, Microsoft Outlook, Apple Calendar, and similar tools.

Best practice

  • Set the event time zone to the host IANA zone (e.g. Asia/Shanghai)
  • List key cities' local times (24-hour) in the description
  • For video calls, note the platform account time zone (Zoom/Teams)
  • Optional: add UTC for a neutral reference in global projects

Common errors

  • Sending "updated" invites without explaining a DST shift
  • Assuming mobile calendars always show the viewer's zone prominently
  • Writing "CST" without China vs US vs Australia context
  • Forgetting US/EU DST weeks in March and October

Verify with Convert before send; see International Meetings, Time Zone Abbreviation Pitfalls (EST/CST/PST), What Is the IANA Time Zone Database.