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Global Live Events and Launch Times

Product launches, sports, webinars — how to publish multi-zone times for worldwide audiences.

Global live events confuse audiences when **the calendar date differs by region**. Keynotes, World Cup matches, and webinars advertised only in "10 AM Pacific" force everyone else to convert — and miss. Professional comms list multiple zones plus a UTC anchor.

Publishing checklist

  • Primary: host IANA zone + 24-hour local time
  • Secondary rows: New York, London, Beijing/Tokyo as needed
  • One UTC line as global anchor
  • Re-verify all rows during DST transition weeks

Typical cases

  • Sports/esports: broadcast rights split regions; "official" time varies
  • Webinars: Zoom shows viewer local time; marketing email still needs host zone
  • Date line: "Tuesday night" in US may be Wednesday morning in Asia
  • Tools: Convert before send

Invites: Time Zones in Calendar Invites; abbreviations: Time Zone Abbreviation Pitfalls (EST/CST/PST); Guides.