America/Regina time zone
8:01AMCST
CSTUTC−6−1 h vs New York (you)
No transitions: America/Regina stays on CST (UTC−6).
About America/Regina
America/Regina is the IANA time zone for CST: SK (most areas) in Canada. It currently keeps Central Standard Time (CST, UTC−6) all year.
Its principal location is Regina at 50.40° N, 104.65° W.
Abbreviations in use: CST. Offset page: UTC−6.
Rule for future years (POSIX TZ string)
CST6
The standard time is called CST and is UTC−6. POSIX writes the offset with the opposite sign (west of Greenwich is positive), which is why the string says "6". There is no daylight saving rule: the zone stays on this offset for every year after the end of its explicit transitions. Software that has no full tzdata copy, such as many embedded devices, can use this string directly as the TZ environment variable.
History of America/Regina since 1970
The record starts with local mean time (UTC−6:59), which ended on August 31, 1905. The first daylight saving time in the record is in 1918.
| Years | Clocks | Abbreviations |
|---|---|---|
| 1970 onward | UTC−6 all year | CST |
Before 1970
52 offset changes before 1970 in the record; the first 12 and the last 12:
- Thursday, August 31, 1905: UTC−6:59 → UTC−7 (MST)
- Sunday, April 14, 1918: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, October 27, 1918: UTC−6 → UTC−7 (MST)
- Sunday, May 4, 1930: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, October 5, 1930: UTC−6 → UTC−7 (MST)
- Sunday, May 3, 1931: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, October 4, 1931: UTC−6 → UTC−7 (MST)
- Sunday, May 1, 1932: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, October 2, 1932: UTC−6 → UTC−7 (MST)
- Sunday, May 7, 1933: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, October 1, 1933: UTC−6 → UTC−7 (MST)
- Sunday, May 6, 1934: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, September 27, 1953: UTC−6 → UTC−7 (MST)
- Sunday, April 25, 1954: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, September 26, 1954: UTC−6 → UTC−7 (MST)
- Sunday, April 24, 1955: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, September 25, 1955: UTC−6 → UTC−7 (MST)
- Sunday, April 29, 1956: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, September 30, 1956: UTC−6 → UTC−7 (MST)
- Sunday, April 28, 1957: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, September 29, 1957: UTC−6 → UTC−7 (MST)
- Sunday, April 26, 1959: UTC−7 → UTC−6 (MDT), daylight saving time
- Sunday, October 25, 1959: UTC−6 → UTC−7 (MST)
- Sunday, April 24, 1960: UTC−7 → UTC−6 (CST)
tzdata commits to accuracy from 1970 for every zone (zone1970.tab); earlier entries are historical research and may be incomplete.
Aliases and zones with the same clock
These older or country-specific IDs are links to America/Regina in tzdata. Their pages redirect here: Canada/Saskatchewan.
Other zones that keep exactly the same time under the current rules (but have a different history): America/Bahia_Banderas, America/Belize, America/Chihuahua, America/Costa_Rica, America/Edmonton, America/El_Salvador, America/Guatemala, America/Inuvik, America/Managua, America/Merida, America/Mexico_City, America/Monterrey.
Places on America/Regina
Convert Regina time
Using America/Regina in code
Every major platform reads the same IANA ID. Store instants in UTC and convert with the ID at display time; never store a fixed offset for a place that has daylight saving time.
// JavaScript
new Date().toLocaleString('en-US', { timeZone: 'America/Regina' })
# Python 3.9+
from zoneinfo import ZoneInfo
from datetime import datetime
datetime.now(ZoneInfo('America/Regina'))
// Java
java.time.ZonedDateTime.now(java.time.ZoneId.of("America/Regina"))
// Go
loc, _ := time.LoadLocation("America/Regina")
time.Now().In(loc)
-- PostgreSQL
SELECT now() AT TIME ZONE 'America/Regina';
# Shell
TZ='America/Regina' datePlatforms ship their own copy of tzdata and update it on their own schedule. After a rule change, outputs can differ until the platform updates; this page uses tzdata 2026f.