Editorial
Posts on time-zone rule changes, daylight saving time and scheduling across zones. Dates and UTC offsets are computed from the IANA time zone database, and each rule change links to the government or IANA source. Posts are written by the editorial team.
Exact 2027 clock-change dates for the US, Europe, Australia, New Zealand, Chile and Mexico, and the weeks when familiar time gaps shift by an hour.
Western Canada, Morocco and Cuba changed their clock rules in 2026. Before/after UTC offsets, the tzdata release behind each change, and how to test your devices.
Straight answers to the most-asked DST questions of 2026: the dates, the year's rule changes in Canada, Morocco and Cuba, the U.S. House vote on permanent DST, and the desync weeks that break recurring meetings.
A working comparison of timeanddate.com, World Time Buddy, Every Time Zone, Calendly, Google Calendar and our own meeting tools, including the cases where a competitor is the better pick.
