Time Zone History

Sakhalin time zone history

The Sakhalin zone has changed its standard time 6 times since 1970, the most of the 9 zones on UTC+11 standard time. On standard time, clocks at Sakhalin run 1 hour 29 minutes ahead of local mean solar time, the largest gap of the 24 zones in Russia whose clocks run ahead of the sun. The latest change of standard time came on March 27, 2016, from UTC+10 to UTC+11.

UTC+11

Standard time is UTC+11 all year under the current rules.

Covers: Sakhalin Island · tz database name Asia/Sakhalin

Convert a time from Sakhalin

Summer time in 30 of 57 years since 1970

UTC+9: 2 hours behind today’s standard timeUTC+9:30:48, UTC+10: behind today’s standard timeUTC+11: today’s standard timeUTC+12: 1 hour ahead of today’s standard timeUTC+9: 2 hours behind today’sstandard timeUTC+9:30:48, UTC+10: behindtoday’s standard timeUTC+11: today’s standard timeUTC+12: 1 hour ahead of today’sstandard time

How to read this chart

Before 1970

190019201940196019001940
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
August 23, 1905Local mean time (UTC+9:30:48) replacedUTC+9numeric only
August 25, 1945Standard time forward 2 hoursUTC+11numeric only
Since 1970
March 31, 1991Summer offset kept as standard time; clocks did not moveUTC+10numeric only
January 19, 1992Standard time forward 1 hourUTC+11numeric only
March 30, 1997Summer offset kept as standard time; clocks did not moveUTC+10numeric only
March 27, 2011Standard time forward 1 hourUTC+11numeric only
October 26, 2014Standard time back 1 hourUTC+10numeric only
March 27, 2016Standard time forward 1 hourUTC+11numeric only

Daylight saving periods

YearsClocks go forwardClocks go backShift and labels
1981–19831 April, 00:001 October, 00:001 hour
1984April 1September 301 hour
1985–1990last Sunday in March, 02:00last Sunday in September, 03:001 hour
1991not that yearSeptember 291 hour
1992–1995last Sunday in March, 02:00fourth Sunday in September, 03:001 hour
1996March 31October 271 hour
1997not that yearOctober 261 hour
1998–2010last Sunday in March, 02:00last Sunday in October, 03:001 hour

Also on UTC+11

Magadan (Russia), Srednekolymsk (Russia), Micronesia, Bougainville (Papua New Guinea), Solomon Islands, Vanuatu, New Caledonia and Norfolk Island.

Clocks next door since 1970

  • Vladivostok (944 km): usually 1 hour behind; different on 6,938 days in 1981–2016.
  • Japan (1,282 km): usually 2 hours behind; different on 5,512 days in 1981–2011 and 2014–2016.
  • Kamchatka (1,320 km): usually 1 hour ahead; different on 5,264 days in 1981–2011 and 2014–2016.
  • Magadan (1,498 km): same time except 6,446 days in 1997–2014 and 2016.
  • North Korea (1,632 km): usually 2 hours behind; different on 6,281 days in 1981–2011 and 2014–2018.

How it compares

Daylight saving time was used in 30 years since 1970, last in 2010; under the current rules the clocks no longer change.