Alberta Didn't Fall Back on November 1: How to Fix Wrong Clocks, Outlook Meetings and Business Systems

In short: on November 1, 2026, Alberta did not turn its clocks back. The province now stays on Alberta Time (ABT), UTC-6, all year. That is the same clock time we had all summer. Any phone, computer, app or gadget that still uses the old “Mountain Time” rules fell back an hour at 2 a.m. and is now one hour behind. The fix is usually to update the device and pick the right time zone. Changing the clock by hand is the wrong fix, and the steps below explain why.

What changed on November 1

• No more fall back or spring forward. The Government of Alberta says clocks “will no longer reset to Mountain Standard Time, and Alberta will remain on Alberta Time year-round” (Alberta.ca).
• Alberta Time = UTC-6. This is what used to be called Mountain Daylight Time (MDT). In winter, Alberta now has the same clock time as Saskatchewan.
• The law: Bill 31 replaced the old Daylight Saving Time Act with the Official Time Act, which sets Alberta’s time at “6 hours behind Coordinated Universal Time” (Alberta Tribune).
• Neighbours changed too. The province says British Columbia, Saskatchewan, Manitoba, Yukon and the Northwest Territories have also ended seasonal time changes (Government of Alberta news release).

Time differences this winter

From Alberta (UTC-6) to…	Difference this winter
Saskatchewan	Same time, all year
British Columbia (most of it)	B.C. is 1 hour behind
Ontario and Quebec	1 hour ahead (it used to be 2)
Montana and US Mountain time	1 hour behind

The University of Calgary also points out that “Alberta and Ontario will be one hour apart rather than two” while Ontario is on standard time (UCalgary). Keep this in mind when you book calls with clients or suppliers in the East.

Why some devices and apps are an hour off

Devices don’t decide the time from the news. They use a time zone database with the rules for every region. The main one is the IANA tz database. Its 2026c release (July 8, 2026) updated America/Edmonton so Alberta stays at UTC-6 after November 1, 2026 (IANA tz 2026c).

Anything still carrying older data uses the old rule. It fell back at 2 a.m. on November 1 and now shows Mountain Standard Time (UTC-7), which is one hour behind. That includes:

• phones, tablets or computers that haven’t installed recent updates;
• business apps and websites built on older software (booking tools, help desks, CRMs and scheduling plugins). One public example: a bug report for the Chatwoot help-desk app found that its bundled time zone data still made Edmonton fall back to UTC-7 (GitHub);
• devices that never get updates, such as car dashboards, thermostats, alarm panels, time clocks, security camera recorders and older phone systems.

IANA itself warned there would “likely be problems downstream”, because common software libraries (Unicode CLDR and ICU) couldn’t handle the change exactly as written. That’s why the database models the switch as happening on November 1 (IANA announcement).

Is it wrong if it says “CST”? Not necessarily. The tz database labels Alberta’s new time with the abbreviation CST, so some software shows “CST” even though the hour is correct (IANA tz 2026c). Check the hour, not the label.

The problems people are running into

1. Phones or PCs showing the wrong time, usually because updates are behind or the time zone was set by hand.
2. Outlook and Teams meetings an hour off. Changing your default calendar time zone “does not automatically update every existing meeting” (UCalgary). Recurring meetings created under the old Mountain Time zone are the usual problem.
3. Outlook for Mac and iOS showing appointments an hour late. One user reported that an appointment booked for 2:45 p.m. showed correctly in Outlook on the web but at 3:45 p.m. in new Outlook for Mac and Outlook for iOS, for appointments on or after November 1. When we checked the thread, there was no official Microsoft fix (Microsoft Q&A).
4. Online booking and reminder systems sending reminders for the wrong hour, or showing customers the wrong slots.
5. Wrong timestamps on camera footage, door access logs, time-clock punches, receipts and backup schedules.
6. Sign-in problems. If someone “fixes” a PC by moving the clock forward an hour but leaves the old time zone in place, the computer’s underlying UTC time is now an hour wrong. Windows domain sign-ins (Kerberos) allow only a few minutes of clock difference by default, so these users can be locked out of the network, file shares and some cloud apps.

How to fix it, device by device

The golden rule: fix the time zone and updates, not the clock. Setting the time by hand covers up the problem today, and it breaks again in March when the old rules “spring forward”.

iPhone and iPad

1. Install the latest iOS/iPadOS update (Settings › General › Software Update).
2. Go to Settings › General › Date & Time and turn on Set Automatically.
3. Restart the phone if the time hasn’t corrected itself.

Android

1. Install system updates (Settings › System › Software update; the exact menu varies by brand).
2. In Settings › System › Date & time, turn on automatic time and automatic time zone.
3. On older phones that no longer get updates, turn off automatic time zone and choose a UTC-6 zone with no daylight saving, such as Regina or Saskatchewan.

Windows 10 and 11

1. Run Windows Update and install everything available. Microsoft has published an Alberta 2026 time zone update.
2. Go to Settings › Time & language › Date & time. Choose (UTC-06:00) Mountain Time (Alberta), then click Sync now.
3. If that zone isn’t in the list yet, temporarily choose (UTC-06:00) Saskatchewan. It’s the same clock time and has no daylight saving. Switch to Mountain Time (Alberta) once updates arrive.
4. Don’t leave the PC on (UTC-07:00) Mountain Time (US & Canada). That zone still follows US daylight saving rules, so it’s an hour behind Alberta this winter.

Mac

Install the latest macOS update. In System Settings › General › Date & Time, turn on automatic time and time zone. If the time is still wrong, set the closest city to Edmonton or Calgary, or use Regina as a temporary fallback.

Outlook, Teams and Microsoft 365 calendars

1. Set your calendar time zone to (UTC-06:00) Mountain Time (Alberta).
   • New Outlook and Outlook on the web: Settings › Calendar › View › Time zones.
   • Classic Outlook: File › Options › Calendar › Time zones.
2. Fix recurring meetings you organize. Open the series (Edit series), change its time zone to Mountain Time (Alberta) and send the update. Only the organizer can change a meeting with attendees.
3. Watch the exceptions. Changing a series’ time zone can clear one-off changes you made to individual meetings in it. Note any moved or cancelled meetings before you change the series, then fix them afterwards.
4. Check meetings with people in other provinces for the next few weeks, especially with Ontario, Quebec and the US.
5. If you use Outlook for Mac or iOS and see the one-hour-late display, check the time in Outlook on the web before you rely on it, and keep both apps updated.

If you look after the Microsoft 365 tenant, also check mailbox regional settings, room and equipment mailboxes, and Bookings pages. Each has its own time zone setting.

Devices that don’t update on their own

The province says older phones, smart watches, TVs, vehicle systems and appliances “may need to be adjusted manually” (Alberta.ca). For each one, check for a firmware update first. If none is available:

• if it has a time zone menu, pick Saskatchewan / Regina or a fixed UTC-6 option with daylight saving turned off;
• if it only has a clock, set it by hand and turn off any automatic daylight saving option, or it will jump again in March.

A checklist for Alberta businesses

Work through this list this week. Most items take only a few minutes.

• Every PC, laptop and phone is fully updated and on the correct time zone (see above).
• Servers and network gear: Windows Server is patched and its time zone is correct. Domain controllers sync with a reliable time source. Linux servers have the updated tzdata package (2026c or later).
• Outlook / Teams: the calendar time zone is set for everyone, recurring meetings are re-sent, and room mailboxes and Bookings pages are checked.
• Booking, scheduling and CRM software: book a test appointment for next week and check the time on the confirmation and the reminder.
• Payroll and time clocks: check that punches since November 1 are correct before the next pay run.
• Security cameras, NVRs, alarm panels and door access: correct timestamps matter if you ever need footage as evidence. Check the schedules for locking and unlocking doors too.
• Phone system: business hours and after-hours routing switch at the right time.
• Point of sale, receipts and backup jobs: check timestamps and scheduled times.
• Your website and Google Business Profile: opening hours are correct, and any online booking widget shows the right slots.
• Software vendors: ask, “Does your product include IANA tz database 2026c or later?” If the answer is no, ask when it will.
• Put a reminder in your calendar for March 14, 2027, the second Sunday in March. Any device that still uses the old rules will “spring forward” that day and be an hour ahead.

For developers and website owners

• Store times in UTC and convert using the America/Edmonton zone. Never hard-code “-7” or “-6”.
• Update the time zone data your stack uses: the OS tzdata package, your language runtime (Java, Node.js, Python and PHP all carry or use tz data) and any libraries such as moment-timezone. Then redeploy, because some apps bundle the data at build time.
• A quick test on Linux: zdump -v America/Edmonton | grep 2026. With up-to-date data, nothing changes on November 1, 2026.
• Run a test booking for a date after November 1 and compare it with a known-good clock.

Sources

• Government of Alberta: Alberta’s new time system (ABT) (Alberta Time, UTC-6, no fall back, guidance for devices that don’t update)
• Government of Alberta news release: It’s Alberta time (neighbouring provinces and territories that ended seasonal changes)
• IANA Time Zone Database release 2026c and the release announcement (America/Edmonton, the CST abbreviation, the expected downstream problems)
• University of Calgary: Alberta timezone impacts (Outlook meetings, the Saskatchewan workaround, the Ontario time difference)
• Microsoft Tech Community: Alberta 2026 time zone update
• Microsoft Q&A: Outlook for Mac and iOS show Alberta events one hour late (user report; no official fix as of writing)
• Alberta Tribune: Official Time Act sets UTC-6 (Bill 31 and the Official Time Act)
• Chatwoot issue #16257 (an example of an app with outdated time zone data)

Frequently asked questions

Did Alberta change the clocks on November 1, 2026?

No. Alberta did not turn its clocks back on November 1, 2026. The province now stays on Alberta Time (ABT), UTC-6, all year. That’s the same time Alberta used all summer, previously called Mountain Daylight Time. There will be no spring forward in March either.

Why is my phone or computer an hour behind in Alberta?

It’s probably using old time zone rules that still “fall back” to Mountain Standard Time (UTC-7). Install the latest software updates and turn on automatic date, time and time zone. If it’s still wrong, choose a UTC-6 zone with no daylight saving, such as Saskatchewan or Regina. Don’t just move the clock forward by hand.

What time zone should I choose in Windows for Alberta?

After installing the latest Windows updates, choose (UTC-06:00) Mountain Time (Alberta). If that option isn’t available yet, use (UTC-06:00) Saskatchewan as a temporary workaround, because it’s the same clock time with no daylight saving. Avoid (UTC-07:00) Mountain Time (US & Canada), which is an hour behind Alberta this winter.

Why are my Outlook meetings an hour off after November 1?

Changing your calendar’s time zone doesn’t automatically fix existing meetings, especially recurring ones created under the old Mountain Time zone. Set your calendar to Mountain Time (Alberta), then have each organizer open the series, change its time zone and send the update. Changing a series’ time zone can clear one-off exceptions, so check those afterwards.

Is Alberta now on Central Standard Time?

Alberta’s official name is Alberta Time (ABT), which is UTC-6. That’s the same clock time as Saskatchewan and Central Standard Time. Some software labels it “CST” because the global time zone database uses that abbreviation. If the hour is correct, the label doesn’t matter.

What's the time difference between Alberta and Ontario now?

During the winter, Alberta is one hour behind Ontario instead of two. When Ontario springs forward in March, the gap goes back to two hours. Alberta has the same time as Saskatchewan all year and is one hour ahead of most of British Columbia.

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Still seeing the wrong time on your office PCs, Outlook calendars or business systems? AlphaIT’s managed IT support and Microsoft 365 team can check and fix them for you. Contact us.