Karachi to HST
-15hKarachi
PKTSOURCEHST
HSTGreen rows indicate typical business hours (9 AM - 5 PM)
PKT and HST on the World Map
The map below highlights the PKT (Pakistan Standard Time) and HST (Hawaii Standard Time) timezone regions across the globe.
PKT – Pakistan Standard Time
UTC+05:00Pakistan Standard Time (PKT) is the time zone for Pakistan, 5 hours ahead of UTC.
- •Pakistan does not observe daylight saving time.
- •Karachi is one of the world's most populous cities.
- •PKT is the same offset as Uzbekistan (UZT) and Yekaterinburg (YEKT).
HST – Hawaii Standard Time
UTC-10:00Hawaii Standard Time (HST) is the time zone for the Hawaiian Islands, 10 hours behind UTC.
- •Hawaii does not observe daylight saving time.
- •HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
- •Hawaii is one of only two US states that don't observe DST (the other is Arizona).
About Karachi
WikipediaKarachi operates on Pakistan Standard Time (PKT), UTC+5. As Pakistan's financial hub and largest port city, Karachi time drives South Asian commerce.
Karachi is one of the fastest-growing megacities in the world.
Karachi vs HST: Offsets, DST and Best Call Times
Karachi runs on Pakistan Standard Time (PKT) at UTC+05:00. HST runs on Hawaii Standard Time (HST) at UTC-10:00. That puts Karachi 15 hours behind HST — a difference of -15h at the current offsets.
In practice, when it is 9:00 AM in Karachi it is 6:00 PM in HST on the previous day. Midnight in Karachi is 9:00 AM in HST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Karachi to HST time conversion table
| Karachi (PKT) | HST (HST) | Day |
|---|---|---|
| 12:00 AM | 9:00 AM | previous day |
| 6:00 AM | 3:00 PM | previous day |
| 7:00 AM | 4:00 PM | previous day |
| 8:00 AM | 5:00 PM | previous day |
| 9:00 AM | 6:00 PM | previous day |
| 12:00 PM | 9:00 PM | previous day |
| 3:00 PM | 12:00 AM | same day |
| 5:00 PM | 2:00 AM | same day |
| 6:00 PM | 3:00 AM | same day |
| 9:00 PM | 6:00 AM | same day |
Why people convert Karachi to HST time
- Scheduling a call from Karachi to HST: a 10:00 AM start in Karachi lands at 7:00 PM in HST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -15h gap: Karachi and HST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in HST is 6:00 PM in Karachi.
- Keeping family and friends in sync: knowing that 8:00 PM in Karachi is 5:00 AM in HST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM PKT" is unambiguous; "3 PM" across a -15h gap is not.
- With a -15h gap there is no shared 9-to-5 window, so alternate the early start: one week Karachi takes the early slot, the next week HST does.
About PKT (Pakistan Standard Time)
Pakistan Standard Time (PKT) is the time zone used throughout Pakistan. PKT does not observe daylight saving time. Pakistan is the 5th most populous country in the world.
About HST (Hawaii Standard Time)
Hawaii Standard Time (HST) is used in the state of Hawaii and does not observe daylight saving time. This makes HST one of the most consistent time zones in the US. The Hawaiian Islands are among the last places on Earth to see a new calendar day.
Best time to call between Karachi and HST
With a -15h offset there is no overlap inside a normal 9 AM – 5 PM day. HST opens at 9:00 AM HST, which is 6:00 PM in Karachi, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Karachi and HST have no shared working hours because of the -15h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Karachi is 15 hours behind HST (PKT UTC+05:00 → HST UTC-10:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Karachi and HST?
Karachi (PKT, UTC+05:00) is 15 hours behind HST (HST, UTC-10:00). The gap is currently -15h.
How do I convert Karachi time to HST time?
Add -15h to Karachi local time. For example, 9:00 AM in Karachi is 6:00 PM in HST (previous day).
What time is it in HST right now?
HST uses HST at UTC-10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -15h offset from Karachi.
What is the best time to call HST from Karachi?
There is no shared working-hours window because of the -15h gap. The closest option is 1:00 PM in Karachi, which is 10:00 PM in HST.
Which is behind, Karachi or HST?
Karachi is 15 hours behind HST. When it is 12:00 PM in Karachi it is 9:00 PM in HST.
Do Karachi and HST use different time zones?
Karachi (Pakistan) uses PKT at UTC+05:00, while HST uses HST at UTC-10:00. The IANA identifiers are Asia/Karachi and Pacific/Honolulu.
Does daylight saving time affect the Karachi–HST difference?
Neither zone observes daylight saving time, so the -15h offset between Karachi and HST is fixed all year.
Which other cities share Karachi's time zone?
PKT also covers Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad, Peshawar.
Which countries use PKT, Karachi's zone?
PKT is used in Pakistan.
Is there a day difference between Karachi and HST?
Sometimes. The -15h gap is large enough that 8:00 PM or later in Karachi already falls on the in HST.
What is the time difference between Karachi and HST?
HST is -15h from Karachi.
What timezone is Karachi in?
Karachi operates on Pakistan Standard Time (PKT), UTC+5. As Pakistan's financial hub and largest port city, Karachi time drives South Asian commerce.
What timezone is HST in?
HST operates on its local timezone.
What are the business hours in Karachi?
Standard business hours in Karachi are 9:00 AM - 5:00 PM PKT.
Which countries use PKT (Pakistan Standard Time)?
PKT is used in Pakistan.
Does PKT observe daylight saving time?
No, PKT does not observe daylight saving time and remains at UTC+05:00 year-round.
What are some interesting facts about PKT?
Pakistan does not observe daylight saving time. Karachi is one of the world's most populous cities.
Which cities are in the HST timezone?
Major cities in the HST timezone include Honolulu, Hilo, Kailua, Pearl City, Kapolei.
What is the UTC offset for HST?
Hawaii Standard Time (HST) is at UTC-10:00.
What should I know about the HST timezone?
Hawaii does not observe daylight saving time. HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
When is it midnight in Karachi, what time is it in HST?
When it is 12:00 AM (midnight) in Karachi (PKT), it is -15h later in HST (HST).
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