{"id":22,"date":"2026-10-02T16:40:00","date_gmt":"2026-10-02T16:40:00","guid":{"rendered":"http:\/\/live-clock.com\/blog\/?p=22"},"modified":"2026-10-07T02:44:35","modified_gmt":"2026-10-07T02:44:35","slug":"dst-world-clock-global-meetings","status":"publish","type":"post","link":"https:\/\/live-clock.com\/blog\/dst-world-clock-global-meetings\/","title":{"rendered":"DST and World Clock Planning for Global Meetings"},"content":{"rendered":"

TL;DR \/ Summary:<\/strong> Daylight saving time shifts break recurring calendar invites twice a year unless you plan with live zone data. Learn DST calendars for major regions, meeting migration tactics, and how a world clock prevents one-hour errors. Check current offsets on live-clock.com<\/a> before sending the next quarterly invite.<\/p>\n

What DST actually changes<\/h2>\n

Regions that observe daylight saving time move civil clocks forward in spring and back in autumn\u2014usually by one hour. The underlying instant on the global timeline does not jump; only local labels change. That means a meeting at “15:00 London” might land at a different UTC instant after the UK switches, while New York has not switched yet, shrinking or widening the gap between offices.<\/p>\n

Teams that store “UTC-5” as a permanent label for New York forget that the offset becomes UTC-4 during US summer. World clocks using proper zone databases update automatically; sticky notes do not.<\/p>\n

Regional DST calendars (overview)<\/h2>\n

United States and Canada (most areas)<\/h3>\n

Spring forward second Sunday in March, fall back first Sunday in November, local 2 AM. Arizona (except Navajo Nation) and Hawaii skip DST; Saskatchewan mostly stays on standard time year-round.<\/p>\n

European Union and UK<\/h3>\n

Last Sunday in March and last Sunday in October\u2014rules similar in spirit but different dates from North America, producing a few weeks each year when transatlantic gaps differ from the usual five or eight hours.<\/p>\n

Southern hemisphere<\/h3>\n

Australia regions observe DST over local summer months (roughly October\u2013April depending on state). Brazil discontinued DST nationally in 2019\u2014verify legacy docs that still mention it.<\/p>\n