America/Winnipeg time zone
8:09AMEST
ESTUTC−5+0 h vs New York (you)
No transitions: America/Winnipeg stays on EST (UTC−5).
About America/Winnipeg
America/Winnipeg is the IANA time zone for EST: Manitoba, ON (northwest) in Canada. It currently keeps Eastern Standard Time (EST, UTC−5) all year.
Its principal location is Winnipeg at 49.88° N, 97.15° W.
Abbreviations in use: EST. Offset page: UTC−5.
Rule for future years (POSIX TZ string)
EST5
The standard time is called EST and is UTC−5. POSIX writes the offset with the opposite sign (west of Greenwich is positive), which is why the string says "5". 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/Winnipeg since 1970
The record starts with local mean time (UTC−6:29), which ended on July 15, 1887. The first daylight saving time in the record is in 1916.
| Years | Clocks | Abbreviations |
|---|---|---|
| 1970–2025 | UTC−6 in winter, UTC−5 in summer | CST, CDT |
| 2026 | UTC−6 until March 8, then UTC−5 | CST, CDT, EST |
| 2027 onward | UTC−5 all year | EST |
Before 1970
49 offset changes before 1970 in the record; the first 12 and the last 12:
- Friday, July 15, 1887: UTC−6:29 → UTC−6 (CST)
- Sunday, April 23, 1916: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, September 17, 1916: UTC−5 → UTC−6 (CST)
- Sunday, April 14, 1918: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, October 27, 1918: UTC−5 → UTC−6 (CST)
- Sunday, May 16, 1937: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, September 26, 1937: UTC−5 → UTC−6 (CST)
- Monday, February 9, 1942: UTC−6 → UTC−5 (CWT), daylight saving time
- Sunday, September 30, 1945: UTC−5 → UTC−6 (CST)
- Sunday, May 12, 1946: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, October 13, 1946: UTC−5 → UTC−6 (CST)
- Sunday, April 27, 1947: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, April 24, 1960: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, September 25, 1960: UTC−5 → UTC−6 (CST)
- Sunday, April 28, 1963: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, September 22, 1963: UTC−5 → UTC−6 (CST)
- Sunday, April 24, 1966: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, October 30, 1966: UTC−5 → UTC−6 (CST)
- Sunday, April 30, 1967: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, October 29, 1967: UTC−5 → UTC−6 (CST)
- Sunday, April 28, 1968: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, October 27, 1968: UTC−5 → UTC−6 (CST)
- Sunday, April 27, 1969: UTC−6 → UTC−5 (CDT), daylight saving time
- Sunday, October 26, 1969: UTC−5 → UTC−6 (CST)
Changes of the winter (standard) offset: Sunday, March 8, 2026, UTC−6 → UTC−5.
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/Winnipeg in tzdata. Their pages redirect here: America/Rainy_River, Canada/Central.
Other zones that keep exactly the same time under the current rules (but have a different history): America/Bogota, America/Cancun, America/Eirunepe, America/Guayaquil, America/Jamaica, America/Lima, America/Panama, America/Rio_Branco.
Convert Winnipeg time
Using America/Winnipeg 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/Winnipeg' })
# Python 3.9+
from zoneinfo import ZoneInfo
from datetime import datetime
datetime.now(ZoneInfo('America/Winnipeg'))
// Java
java.time.ZonedDateTime.now(java.time.ZoneId.of("America/Winnipeg"))
// Go
loc, _ := time.LoadLocation("America/Winnipeg")
time.Now().In(loc)
-- PostgreSQL
SELECT now() AT TIME ZONE 'America/Winnipeg';
# Shell
TZ='America/Winnipeg' 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.