HST to Qatar
+13hHST
HSTSOURCEQatar
ASTGreen rows indicate typical business hours (9 AM - 5 PM)
HST and AST on the World Map
The map below highlights the HST (Hawaii Standard Time) and AST (Arabia 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).
AST – Arabia Standard Time
UTC+03:00Arabia Standard Time (AST, UTC+03:00) is the time zone for Saudi Arabia and the other Gulf states of the Arabian peninsula.
- •None of the Gulf states on Arabia Standard Time observe daylight saving.
- •AST is the same offset as Moscow Standard Time and East Africa Time.
- •Riyadh is one hour ahead of Central European Time in winter.
- •The AST abbreviation is shared with Atlantic Standard Time (UTC-04:00).
Understanding the +13h Gap: HST vs Qatar
HST runs on Hawaii Standard Time (HST) at UTC-10:00. Qatar runs on Arabian Standard Time (AST) at UTC+03:00. That puts HST 13 hours ahead of Qatar — a difference of +13h at the current offsets.
In practice, when it is 9:00 AM in HST it is 10:00 PM in Qatar. Midnight in HST is 1:00 PM in Qatar. Neither zone observes daylight saving time, so the offset between them stays constant all year.
HST to Qatar time conversion table
| HST (HST) | Qatar (AST) | Day |
|---|---|---|
| 12:00 AM | 1:00 PM | same day |
| 6:00 AM | 7:00 PM | same day |
| 7:00 AM | 8:00 PM | same day |
| 8:00 AM | 9:00 PM | same day |
| 9:00 AM | 10:00 PM | same day |
| 12:00 PM | 1:00 AM | next day |
| 3:00 PM | 4:00 AM | next day |
| 5:00 PM | 6:00 AM | next day |
| 6:00 PM | 7:00 AM | next day |
| 9:00 PM | 10:00 AM | next day |
Why people convert HST to Qatar time
- Scheduling a call from HST to Qatar: a 10:00 AM start in HST lands at 11:00 PM in Qatar, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +13h gap: HST and Qatar 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 Qatar is 10:00 PM in HST.
- Watching a live event or market open: HST viewers need 10:00 PM in Qatar to catch a 9:00 AM start there, and 11:00 AM if the event is anchored to HST.
- Always state the zone abbreviation, not just the hour. "3:00 PM HST" is unambiguous; "3 PM" across a +13h gap is not.
- With a +13h gap there is no shared 9-to-5 window, so alternate the early start: one week HST takes the early slot, the next week Qatar 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 AST (Arabia Standard Time)
Arabia Standard Time (AST) is fixed at UTC+03:00 all year across Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq and Yemen. None of these countries observes daylight saving time, so the offset never changes. The abbreviation collides with Atlantic Standard Time (UTC-04:00) used in eastern Canada and the Caribbean; this page covers the Arabian peninsula meaning. Arabia Standard Time is the same offset as Moscow Standard Time and East Africa Time, which makes scheduling with Europe straightforward — Riyadh is one hour ahead of Central European Time in winter and level with it during European summer time.
Best time to call between HST and Qatar
With a +13h offset there is no overlap inside a normal 9 AM – 5 PM day. Qatar opens at 9:00 AM AST, which is 10:00 PM in HST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
HST and Qatar have no shared working hours because of the +13h gap. Teams need to alternate early starts or rely on asynchronous handovers.
HST is 13 hours ahead of Qatar (HST UTC-10:00 → AST UTC+03:00). 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 Qatar?
HST (HST, UTC-10:00) is 13 hours ahead of Qatar (AST, UTC+03:00). The gap is currently +13h.
How do I convert HST time to Qatar time?
Add +13h to HST local time. For example, 9:00 AM in HST is 10:00 PM in Qatar.
What time is it in Qatar right now?
Qatar uses AST at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +13h offset from HST.
What is the best time to call Qatar from HST?
There is no shared working-hours window because of the +13h gap. The closest option is 1:00 PM in HST, which is 2:00 AM in Qatar.
Which is ahead, HST or Qatar?
HST is 13 hours ahead of Qatar. When it is 12:00 PM in HST it is 1:00 AM in Qatar.
Do HST and Qatar use different time zones?
HST uses HST at UTC-10:00, while Qatar (Qatar) uses AST at UTC+03:00. The IANA identifiers are Pacific/Honolulu and Asia/Qatar.
Does daylight saving time affect the HST–Qatar difference?
Neither zone observes daylight saving time, so the +13h offset between HST and Qatar 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 Qatar?
Sometimes. The +13h gap is large enough that 8:00 PM or later in HST already falls on the next day in Qatar.
What is the time difference between HST and Qatar?
Qatar is +13h from HST.
What timezone is HST in?
HST operates on its local timezone.
What timezone is Qatar in?
Qatar operates on its local timezone.
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 AST timezone?
Major cities in the AST timezone include Riyadh, Jeddah, Doha, Kuwait City, Baghdad.
What is the UTC offset for AST?
Arabia Standard Time (AST) is at UTC+03:00.
What should I know about the AST timezone?
None of the Gulf states on Arabia Standard Time observe daylight saving. AST is the same offset as Moscow Standard Time and East Africa Time.
When is it midnight in HST, what time is it in Qatar?
When it is 12:00 AM (midnight) in HST (HST), it is +13h later in Qatar (AST).
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