City history
Founded as the coastal fishing settlement of Kolachi, Karachi evolved into Pakistan's principal port and economic center, establishing Karachi Time in 1951 to define standard time across West Pakistan.
Chapter one
Indigenous name
"Village of Kolachi"
Named after Mai Kolachi, a legendary Balochi fisherwoman, or the Kolachi tribe, who established a small fishing village around the natural harbour in the early 18th century.
Disputed ancient harbor names
Ancient Greek texts record coastal harbors like Krokola and Barbarikon near the Indus River delta, which some historians associate with the geographical area around modern Karachi.
Ancient coastal port
Recorded by medieval Arab historians as the port captured by Umayyad general Muhammad bin Qasim in 712 CE, serving as a prominent regional port near Karachi's present coastal delta.
Village of Kolachi
A fortified fishing village built near the Arabian Sea. Its defensive walls included Khara Dar (Brackish Gate) and Meetha Dar (Sweet Gate), which remain as historic Karachi neighborhoods today.
Anglicized transliteration of Kolachi
Under Talpur dynasty rule and subsequent British conquest in 1843, the town was transcribed as Kurrachee in colonial administrative records before standardizing as Karachi.
Chapter two
Under British Raj governance, Karachi operated on Indian Standard Time (UTC+05:30), centered on the 82.5 E meridian near Allahabad.
Upon gaining independence in August 1947, Pakistan retained UTC+05:30 to maintain continuity across national railway, telegraph, and administrative systems.
Based on recommendations by mathematician Mahmood Anwar, Pakistan adopted Karachi Time at UTC+05:00 for West Pakistan on September 30, 1951, adjusting 30 minutes behind India.
Following the independence of Bangladesh, Karachi Time was officially renamed Pakistan Standard Time (PKT), maintaining the UTC+05:00 offset as the national standard.
Pakistan implemented daylight saving time from April 7 to October 6, 2002, setting local clocks forward one hour to UTC+06:00 to conserve electricity.
To mitigate national power shortages, Pakistan observed daylight saving time from June 1 to October 31, 2008, shifting local time to UTC+06:00.
Pakistan observed daylight saving time for the last time from April 15 to October 31, 2009, after which the country returned permanently to standard UTC+05:00.
Chapter three
On April 20, 1885, Karachi opened its first tramway line between Keamari Port and the city center, which later introduced petrol-powered trams in 1909 before operating until 1975.
Constructed in the Saddar district, Empress Market was completed with an iconic 140-foot central clock tower to provide public timekeeping for market vendors and visitors.
Designed in Gothic Revival style by municipal engineer James Strachan, Merewether Tower was formally opened in 1892, featuring four seven-foot clock faces set 70 feet above ground.
As Pakistan's federal capital, Karachi served as the namesake reference for West Pakistan's official time zone (UTC+05:00), setting standard civil time across the region.