Time Zone History

Edmonton time zone history

Daylight saving time was used in 55 years since 1970, last in 2026; under the current rules the clocks no longer change. On November 1, 2026 the summer offset, UTC−6, became permanent standard time; the clocks did not move that day. On standard time, clocks at Edmonton run 1 hour 34 minutes ahead of local mean solar time, the second-largest gap of the 17 zones on UTC−6 standard time whose clocks run ahead of the sun.

UTC−6

Standard time is UTC−6 (CST) all year under the current rules.

Covers: Alberta, east British Columbia, east Northwest Territories, west Saskatchewan · tz database name America/Edmonton

Convert a time from Edmonton

Summer time in 55 of 57 years since 1970

UTC−7:33:52: 1 hour 34 minutes behind today’s standard timeUTC−7: 1 hour behind today’s standard timeUTC−6: today’s standard timeUTC−7:33:52: 1 hour 34 minutesbehind today’s standard timeUTC−7: 1 hour behind today’sstandard timeUTC−6: today’s standard time

How to read this chart

Before 1970

190019201940196019001940
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
September 1, 1906Local mean time (UTC−7:33:52) replacedUTC−7MST
Since 1970
November 1, 2026Summer offset kept as standard time; clocks did not moveUTC−6CST

Daylight saving periods

YearsClocks go forwardClocks go backShift and labels
Before 1970
1918April 14October 271 hour, MST to MDT
1919April 13May 271 hour, MST to MDT
1920April 25October 311 hour, MST to MDT
1921–1923last Sunday in April, 02:00last Sunday in September, 02:001 hour, MST to MDT
1942February 9not that year1 hour, MST to MWT
1945not that yearSeptember 301 hour
1947April 27September 281 hour, MST to MDT
Since 1970
1972–1986last Sunday in April, 02:00last Sunday in October, 02:001 hour, MST to MDT
1987–2006first Sunday in April, 02:00last Sunday in October, 02:001 hour, MST to MDT
2007–2025second Sunday in March, 02:00first Sunday in November, 02:001 hour, MST to MDT
2026March 8not that year1 hour, MST to MDT

Clock changes in 2026, 2027 and 2028

  • March 8, 2026, 02:00 forward 1 hour to UTC−6

Also on UTC−6

Swift Current (Canada), Regina (Canada), Beulah, North Dakota (United States), Center, North Dakota (United States), New Salem, North Dakota (United States), Rankin Inlet (Canada), Inuvik (Canada), Menominee (United States), Chicago (United States) and Knox, Indiana (United States) (nearest first; 17 more on the list of offsets).

Clocks next door since 1970

  • Dawson Creek (500 km): usually 1 hour behind; different on 8,619 days in 1970–2026.
  • Swift Current (530 km): same time except 8,248 days in 1972–2026.
  • Regina (697 km): same time except 9,099 days in 1970–2026.
  • Fort Nelson (816 km): usually 1 hour behind; different on 1,775 days in 1970–2026.
  • Vancouver (820 km): usually 1 hour behind; different on 375 days in 1970–2026.

How it compares

Edmonton kept local mean time (UTC−7:33:52) until 1906, the latest switch of the 15 zones in Canada with local mean time in the record.