Time Zone History

Pakistan time zone history

Daylight saving time was used in 3 years since 1970, last in 2009; under the current rules the clocks no longer change. Karachi left local mean time (UTC+4:28:12) in 1907, the second-earliest switch of the 14 zones on UTC+5 standard time with local mean time in the record. Clocks were first moved for daylight saving in 1942, the earliest start of the 13 zones on UTC+5 standard time that ever used daylight saving time.

UTC+5

Standard time is UTC+5 (PKT) all year under the current rules.

tz database name Asia/Karachi

Convert a time from Pakistan

Summer time in 3 of 57 years since 1970

UTC+4:28:12: 32 minutes behind today’s standard timeUTC+5: today’s standard timeUTC+5:30: 30 minutes ahead of today’s standard timeUTC+6, UTC+6:30: ahead of today’s standard timeUTC+4:28:12: 32 minutes behindtoday’s standard timeUTC+5: today’s standard timeUTC+5:30: 30 minutes ahead oftoday’s standard timeUTC+6, UTC+6:30: ahead of today’sstandard time

How to read this chart

Before 1970

190019201940196019001940
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
January 1, 1907Local mean time (UTC+4:28:12) replacedUTC+5:30numeric only
September 30, 1951Standard time back 30 minutesUTC+5numeric only

Daylight saving periods

YearsClocks go forwardClocks go backShift and labels
Before 1970
1942September 1not that year1 hour
1945not that yearOctober 151 hour
Since 1970
2002April 7October 61 hour, PKT to PKST
2008June 1November 11 hour, PKT to PKST
2009April 15November 11 hour, PKT to PKST

Also on UTC+5

Tajikistan, Samarkand (Uzbekistan), Turkmenistan, Tashkent (Uzbekistan), Qyzylorda (Kazakhstan), Almaty (Kazakhstan), Maldives, Aqtau (Kazakhstan), Atyrau (Kazakhstan) and Aqtobe (Kazakhstan) (nearest first; 5 more on the list of offsets).

Clocks next door since 1970

  • Afghanistan (1,093 km): usually 30 minutes behind; different on 535 days in 2002, 2008 and 2009.
  • United Arab Emirates (1,184 km): usually 1 hour behind; different on 535 days in 2002, 2008 and 2009.
  • Tajikistan (1,534 km): same time except 8,456 days in 1970–1991, 2002, 2008 and 2009.
  • Qatar (1,563 km): usually 2 hours behind; different on 1,417 days in 1970–1972, 2002, 2008 and 2009.
  • Samarkand (Uzbekistan) (1,646 km): same time except 2,729 days in 1981–1991, 2002, 2008 and 2009.

How it compares

Standard time has stayed at UTC+5 since 1951.

On standard time, clocks in Karachi run 32 minutes ahead of local mean solar time.