Pakistan uses one time zone, which is Pakistan Standard Time (PKT). This is — that is, five hours ahead of Coordinated Universal Time.
| Period in use | Time offset from GMT[1] | Notes |
|---|---|---|
| Prior until 1907 | UTC+04:28:12 | Karachi Time (KART) |
| 1907–1951 | Indian Standard Time (IST) | |
| 1951–1971 | in West Pakistan in East Pakistan (today Bangladesh) | Karachi Time (KART) Dacca Time (DACT) |
| 1971–present | in Pakistan | Pakistan Standard Time (PKT) |
Pakistan has experimented with Daylight Saving Time (DST) a number of times since 2002, shifting local time from to during various summer periods.Daylight saving time in Pakistan has not been observed since 2009.
The IANA time zone database contains one zone for Pakistan in the file zone.tab, named Asia/Karachi.