AST to Dubai
+8hAST
ASTSOURCEDubai
GSTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and GST on the World Map
The map below highlights the AST (Atlantic Standard Time) and GST (Gulf Standard Time) timezone regions across the globe.
AST – Atlantic Standard Time
UTC-04:00Atlantic Standard Time (AST) is the time zone for the Canadian Atlantic provinces and the Caribbean, 4 hours behind UTC.
- •Puerto Rico uses AST year-round and does not observe DST.
- •AST is 1 hour ahead of EST.
- •Halifax, the capital of Nova Scotia, is the largest city in AST Canada.
GST – Gulf Standard Time
UTC+04:00Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.
- •Dubai uses GST year-round with no daylight saving time.
- •GST is 9 hours ahead of EST and 4 hours ahead of GMT.
- •The Dubai Financial Market (DFM) operates on GST.
About Dubai
WikipediaDubai operates on Gulf Standard Time (GST), 4 hours ahead of GMT. Dubai's position between Europe and Asia makes it a strategic hub for international business.
Dubai has no income tax, making it a major hub for international business.
AST to Dubai Time Difference – Complete Guide
AST runs on Atlantic Standard Time (AST) at UTC-04:00. Dubai runs on Gulf Standard Time (GST) at UTC+04:00. That puts AST 8 hours ahead of Dubai — a difference of +8h at the current offsets.
In practice, when it is 9:00 AM in AST it is 5:00 PM in Dubai. Midnight in AST is 8:00 AM in Dubai. Neither zone observes daylight saving time, so the offset between them stays constant all year.
AST to Dubai time conversion table
| AST (AST) | Dubai (GST) | Day |
|---|---|---|
| 12:00 AM | 8:00 AM | same day |
| 6:00 AM | 2:00 PM | same day |
| 7:00 AM | 3:00 PM | same day |
| 8:00 AM | 4:00 PM | same day |
| 9:00 AM | 5:00 PM | same day |
| 12:00 PM | 8:00 PM | same day |
| 3:00 PM | 11:00 PM | same day |
| 5:00 PM | 1:00 AM | next day |
| 6:00 PM | 2:00 AM | next day |
| 9:00 PM | 5:00 AM | next day |
Why people convert AST to Dubai time
- Scheduling a call from AST to Dubai: a 10:00 AM start in AST lands at 6:00 PM in Dubai, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +8h gap: AST and Dubai 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 Dubai is 5:00 PM in AST.
- Coordinating a AST-based team with Dubai 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 AST" is unambiguous; "3 PM" across a +8h gap is not.
- With a +8h gap there is no shared 9-to-5 window, so alternate the early start: one week AST takes the early slot, the next week Dubai does.
About AST (Atlantic Standard Time)
Atlantic Standard Time (AST) covers Canada's Atlantic provinces (Nova Scotia, New Brunswick, Prince Edward Island, and most of Labrador), as well as several Caribbean nations. Puerto Rico and the US Virgin Islands use AST year-round without daylight saving time. The Canadian provinces switch to Atlantic Daylight Time (ADT) in summer.
About GST (Gulf Standard Time)
Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.
Best time to call between AST and Dubai
With a +8h offset there is no overlap inside a normal 9 AM – 5 PM day. Dubai opens at 9:00 AM GST, which is 5:00 PM in AST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
AST and Dubai have no shared working hours because of the +8h gap. Teams need to alternate early starts or rely on asynchronous handovers.
AST is 8 hours ahead of Dubai (AST UTC-04:00 → GST UTC+04:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
AST
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Nov 1, 2026
Dubai
Does not observe DST
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 AST and Dubai?
AST (AST, UTC-04:00) is 8 hours ahead of Dubai (GST, UTC+04:00). The gap is currently +8h.
How do I convert AST time to Dubai time?
Add +8h to AST local time. For example, 9:00 AM in AST is 5:00 PM in Dubai.
What time is it in Dubai right now?
Dubai uses GST at UTC+04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +8h offset from AST.
What is the best time to call Dubai from AST?
There is no shared working-hours window because of the +8h gap. The closest option is 1:00 PM in AST, which is 9:00 PM in Dubai.
Which is ahead, AST or Dubai?
AST is 8 hours ahead of Dubai. When it is 12:00 PM in AST it is 8:00 PM in Dubai.
Do AST and Dubai use different time zones?
AST uses AST at UTC-04:00, while Dubai (UAE) uses GST at UTC+04:00. The IANA identifiers are America/Halifax and Asia/Dubai.
Does daylight saving time affect the AST–Dubai difference?
Neither zone observes daylight saving time, so the +8h offset between AST and Dubai is fixed all year.
Which other cities share AST's time zone?
AST also covers Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.
Which countries use AST, AST's zone?
AST is used in Canada (Atlantic provinces), Puerto Rico, US Virgin Islands, Dominican Republic, Venezuela, Bolivia, Barbados, Trinidad and Tobago.
Is there a day difference between AST and Dubai?
Not normally. The +8h gap only pushes the date over for late-evening times.
What is the time difference between AST and Dubai?
Dubai is +8h from AST.
What timezone is AST in?
AST operates on its local timezone.
What timezone is Dubai in?
Dubai operates on Gulf Standard Time (GST), 4 hours ahead of GMT. Dubai's position between Europe and Asia makes it a strategic hub for international business.
What are the business hours in Dubai?
Standard business hours in Dubai are 8:00 AM - 6:00 PM GST.
Which countries use AST (Atlantic Standard Time)?
AST is used in Canada (Atlantic provinces), Puerto Rico, US Virgin Islands, Dominican Republic, Venezuela, Bolivia, and 2 more countries.
Does AST observe daylight saving time?
Yes, AST switches to ADT during summer months.
What are some interesting facts about AST?
Puerto Rico uses AST year-round and does not observe DST. AST is 1 hour ahead of EST.
Which cities are in the GST timezone?
Major cities in the GST timezone include Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
What is the UTC offset for GST?
Gulf Standard Time (GST) is at UTC+04:00.
What should I know about the GST timezone?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
When is it midnight in AST, what time is it in Dubai?
When it is 12:00 AM (midnight) in AST (AST), it is +8h later in Dubai (GST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More AST time conversions
- ast to halifax
- ast to new york
- ast to london
- ast to tokyo
- ast to singapore
- ast to sydney
- ast to los angeles
- ast to paris
- ast to delhi
- ast to mumbai
- ast to berlin
- ast to hong kong
- ast to toronto
- ast to kathmandu
- new york to ast
- london to ast
- dubai to ast
- tokyo to ast
- singapore to ast
- sydney to ast
- los angeles to ast
- paris to ast
- delhi to ast
- mumbai to ast
- berlin to ast
- hong kong to ast
- toronto to ast
- kathmandu to ast
See every conversion from AST →·See every conversion from Dubai →