HST to Karachi
+15hHST
HSTSOURCEKarachi
PKTGreen rows indicate typical business hours (9 AM - 5 PM)
HST and PKT on the World Map
The map below highlights the HST (Hawaii Standard Time) and PKT (Pakistan Standard Time) timezone regions across the globe.
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).
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).
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.
Understanding the +15h Gap: HST vs Karachi
HST runs on Hawaii Standard Time (HST) at UTC-10:00. Karachi runs on Pakistan Standard Time (PKT) at UTC+05:00. That puts HST 15 hours ahead of Karachi — a difference of +15h at the current offsets.
In practice, when it is 9:00 AM in HST it is 12:00 AM in Karachi on the next day. Midnight in HST is 3:00 PM in Karachi. Neither zone observes daylight saving time, so the offset between them stays constant all year.
HST to Karachi time conversion table
| HST (HST) | Karachi (PKT) | Day |
|---|---|---|
| 12:00 AM | 3:00 PM | same day |
| 6:00 AM | 9:00 PM | same day |
| 7:00 AM | 10:00 PM | same day |
| 8:00 AM | 11:00 PM | same day |
| 9:00 AM | 12:00 AM | next day |
| 12:00 PM | 3:00 AM | next day |
| 3:00 PM | 6:00 AM | next day |
| 5:00 PM | 8:00 AM | next day |
| 6:00 PM | 9:00 AM | next day |
| 9:00 PM | 12:00 PM | next day |
Why people convert HST to Karachi time
- Scheduling a call from HST to Karachi: a 10:00 AM start in HST lands at 1:00 AM in Karachi the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +15h gap: HST and Karachi 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 Karachi is 12:00 AM in HST.
- Coordinating a HST-based team with Karachi contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM HST" 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 HST takes the early slot, the next week Karachi does.
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.
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.
Best time to call between HST and Karachi
With a +15h offset there is no overlap inside a normal 9 AM – 5 PM day. Karachi opens at 9:00 AM PKT, which is 12:00 AM in HST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
HST and Karachi have no shared working hours because of the +15h gap. Teams need to alternate early starts or rely on asynchronous handovers.
HST is 15 hours ahead of Karachi (HST UTC-10:00 → PKT UTC+05:00). 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 HST and Karachi?
HST (HST, UTC-10:00) is 15 hours ahead of Karachi (PKT, UTC+05:00). The gap is currently +15h.
How do I convert HST time to Karachi time?
Add +15h to HST local time. For example, 9:00 AM in HST is 12:00 AM in Karachi (next day).
What time is it in Karachi right now?
Karachi uses PKT at UTC+05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +15h offset from HST.
What is the best time to call Karachi from HST?
There is no shared working-hours window because of the +15h gap. The closest option is 1:00 PM in HST, which is 4:00 AM in Karachi.
Which is ahead, HST or Karachi?
HST is 15 hours ahead of Karachi. When it is 12:00 PM in HST it is 3:00 AM in Karachi.
Do HST and Karachi use different time zones?
HST uses HST at UTC-10:00, while Karachi (Pakistan) uses PKT at UTC+05:00. The IANA identifiers are Pacific/Honolulu and Asia/Karachi.
Does daylight saving time affect the HST–Karachi difference?
Neither zone observes daylight saving time, so the +15h offset between HST and Karachi is fixed all year.
Which other cities share HST's time zone?
HST also covers Honolulu, Hilo, Kailua, Pearl City, Kapolei.
Which countries use HST, HST's zone?
HST is used in United States (Hawaii).
Is there a day difference between HST and Karachi?
Sometimes. The +15h gap is large enough that 8:00 PM or later in HST already falls on the next day in Karachi.
What is the time difference between HST and Karachi?
Karachi is +15h from HST.
What timezone is HST in?
HST operates on its local timezone.
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 are the business hours in Karachi?
Standard business hours in Karachi are 9:00 AM - 5:00 PM PKT.
Which countries use HST (Hawaii Standard Time)?
HST is used in United States (Hawaii).
Does HST observe daylight saving time?
No, HST does not observe daylight saving time and remains at UTC-10:00 year-round.
What are some interesting facts about HST?
Hawaii does not observe daylight saving time. HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
Which cities are in the PKT timezone?
Major cities in the PKT timezone include Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad, Peshawar.
What is the UTC offset for PKT?
Pakistan Standard Time (PKT) is at UTC+05:00.
What should I know about the PKT timezone?
Pakistan does not observe daylight saving time. Karachi is one of the world's most populous cities.
When is it midnight in HST, what time is it in Karachi?
When it is 12:00 AM (midnight) in HST (HST), it is +15h later in Karachi (PKT).
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