Asia/Yangon

Time zone identifier: Asia/Yangon

Current civil offset: +06:30 (+0630)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1879-12-31

Local Mean Time (LMT): +06:24:47 based on geographic meridian

Total recorded transitions: 4 transitions across 3 distinct offsets

Associated countries: CC, MM

Aliases (Link targets): Asia/Rangoon, Indian/Cocos

Historical Offset Step Chart (1880 to Present)

Text summary: Asia/Yangon shifted between 3 distinct offsets from 1879-12-31 through the modern era.

Complete Transition History (4 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1879-12-31T17:35:13Z`	`1880-01-01 00:00:00`	+06:24:47 → +06:24:47	`RMT`	No	offset-only
`1919-12-31T17:35:13Z`	`1920-01-01 00:05:13`	+06:24:47 → +06:30	`+0630`	No	gap
`1942-04-30T17:30:00Z`	`1942-05-01 02:30:00`	+06:30 → +09:00	`+09`	No	gap
`1945-05-02T15:00:00Z`	`1945-05-02 21:30:00`	+09:00 → +06:30	`+0630`	No	overlap

Notes from the Maintainers

Source: asia (Lines 253 to 265)

Cocos (Keeling) Islands
Myanmar (Burma)

Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon.

From Paul Eggert (2017-04-20):
Page 27 of Reed & Low (cited for Asia/Kolkata) says "Rangoon local time is
used upon the railways and telegraphs of Burma, and is 6h. 24m. 47s. ahead
of Greenwich."  This refers to the period before Burma's transition to +0630,
a transition for which Shanks is the only source.

Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]

Attributed Statements:

Paul Eggert (2017-04-20):

Page 27 of Reed & Low (cited for Asia/Kolkata) says "Rangoon local time is used upon the railways and telegraphs of Burma, and is 6h. 24m. 47s. ahead of Greenwich." This refers to the period before Burma's transition to +0630, a transition for which Shanks is the only source. Zone NAME STDOFF RULES FORMAT [UNTIL]

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.