CyberNative

Browser check · 2026 time-zone rules

Six places changed their time-zone rules in 2026. Does your browser know?

Each clock asks this browser what time it is there, then shows the right time beside it. Old time-zone data puts a place an hour off. Nothing leaves this page.

Reading this browser’s time-zone data…

The 2026 releases of the time-zone database, and which of their changes this browser shows

    Check a server or container

    Your browser has its own copy of the rules. Servers, containers and runtimes each have theirs. This loop prints what the machine’s data says for the six places on 1 December 2026, 12:00 UTC. It works on Linux, including Alpine.

    for z in America/Vancouver America/Edmonton Africa/Casablanca America/Inuvik America/Winnipeg America/Havana; do printf "%s %s\n" "$z" "$( (TZ=$z date -d @1796126400 +%z || TZ=$z date -r 1796126400 +%z) 2>/dev/null)"; done

    For a container that has a shell, put the loop inside the quotes of docker run --rm your-image sh -c '…'. An image without time-zone data prints +0000 for every place.

    Windows doesn’t use these files. It has its own zones for Canada: see the Windows section of our Canada guide.

    What changed

    PlaceZoneRight offsetOld data showsFixed in
    British ColumbiaAmerica/VancouverUTC−07 from 1 Nov 2026UTC−082026b (April)
    AlbertaAmerica/EdmontonUTC−06 from 1 Nov 2026UTC−072026c (July)
    MoroccoAfrica/CasablancaUTC+00 from 20 Sep 2026UTC+012026c (July)
    Northwest TerritoriesAmerica/InuvikUTC−06 from 1 Nov 2026UTC−072026d (11 Sep)
    ManitobaAmerica/WinnipegUTC−05 from 1 Nov 2026UTC−062026e (29 Sep)
    CubaAmerica/HavanaUTC−04 until 7 Nov 2027UTC−05 from 1 Nov 2026 to 14 Mar 20272026f (28 Oct)

    The four Canadian places stop changing their clocks from 02:00 local time on 1 November 2026. Cuba keeps daylight saving time through the winter. The tested fixes, runtime by runtime, are in our guides: wrong time after Canada’s 1 November change and Cuba keeps daylight saving time.