America/Coral_Harbour

Time zone identifier: America/Coral_Harbour

Current civil offset: -05:00 (EST)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1890-01-01

Local Mean Time (LMT): -05:18:08 based on geographic meridian

Total recorded transitions: 2 transitions across 3 distinct offsets

Historical Offset Step Chart (1880 to Present)

Text summary: America/Coral_Harbour shifted between 3 distinct offsets from 1890-01-01 through the modern era.

Complete Transition History (2 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1890-01-01T05:18:08Z`	`1889-12-31 23:58:32`	-05:18:08 → -05:19:36	`CMT`	No	overlap
`1908-04-22T05:19:36Z`	`1908-04-22 00:19:36`	-05:19:36 → -05:00	`EST`	No	gap

Notes from the Maintainers

Source: backzone (Lines 538 to 549)

United States

From Paul Eggert (2018-03-18):
America/Chillicothe would be tricky, as it was a city of two-timers:
"To prevent a constant mixup at Chillicothe, caused by the courthouse
clock running on central time and the city running on 'daylight saving'
time, a third hand was added to the dial of the courthouse clock."
-- Ohio news in brief. The Cedarville Herald. 1920-05-21;43(21):1 (col. 5)
https://digitalcommons.cedarville.edu/cedarville_herald/794

Canada

Attributed Statements:

Paul Eggert (2018-03-18):

America/Chillicothe would be tricky, as it was a city of two-timers: "To prevent a constant mixup at Chillicothe, caused by the courthouse clock running on central time and the city running on 'daylight saving' time, a third hand was added to the dial of the courthouse clock." -- Ohio news in brief. The Cedarville Herald. 1920-05-21;43(21):1 (col. 5) https://digitalcommons.cedarville.edu/cedarville_herald/794 Canada

Years on Record

Methodology Note: The 1970 Rule

tzdb guarantees accuracy for timestamps from 1970 onwards. Transitions prior to 1970 represent best-effort historical reconstructions.