Saudi Arabia to Vietnam
+4hSaudi Arabia
ASTSOURCEVietnam
ICTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and ICT on the World Map
The map below highlights the AST (Arabia Standard Time) and ICT (Indochina Time) timezone regions across the globe.
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).
ICT – Indochina Time
UTC+07:00Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.
- •Bangkok is one of the most visited cities in the world.
- •ICT is 12 hours ahead of EST.
- •Thailand, Vietnam, and Cambodia all share ICT.
Comparing Time Zones: Saudi Arabia and Vietnam
Saudi Arabia runs on Arabian Standard Time (AST) at UTC+03:00. Vietnam runs on Indochina Time (ICT) at UTC+07:00. That puts Saudi Arabia 4 hours ahead of Vietnam — a difference of +4h at the current offsets.
In practice, when it is 9:00 AM in Saudi Arabia it is 1:00 PM in Vietnam. Midnight in Saudi Arabia is 4:00 AM in Vietnam. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Saudi Arabia to Vietnam time conversion table
| Saudi Arabia (AST) | Vietnam (ICT) | Day |
|---|---|---|
| 12:00 AM | 4:00 AM | same day |
| 6:00 AM | 10:00 AM | same day |
| 7:00 AM | 11:00 AM | same day |
| 8:00 AM | 12:00 PM | same day |
| 9:00 AM | 1:00 PM | same day |
| 12:00 PM | 4:00 PM | same day |
| 3:00 PM | 7:00 PM | same day |
| 5:00 PM | 9:00 PM | same day |
| 6:00 PM | 10:00 PM | same day |
| 9:00 PM | 1:00 AM | next day |
Why people convert Saudi Arabia to Vietnam time
- Scheduling a call from Saudi Arabia to Vietnam: a 10:00 AM start in Saudi Arabia lands at 2:00 PM in Vietnam, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Saudi Arabia and Vietnam are inside the 9-to-5 working day between 9:00 AM and 1:00 PM AST time (1:00 PM–5:00 PM ICT). That is roughly 4 hours of usable overlap.
- Watching a live event or market open: Saudi Arabia viewers need 1:00 PM in Vietnam to catch a 9:00 AM start there, and 8:00 PM if the event is anchored to Saudi Arabia.
- Always state the zone abbreviation, not just the hour. "3:00 PM AST" is unambiguous; "3 PM" across a +4h gap is not.
- Block 9:00 AM–1:00 PM AST as the recurring meeting window if you work primarily from Saudi Arabia and need Vietnam colleagues present.
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.
About ICT (Indochina Time)
Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.
Best time to call between Saudi Arabia and Vietnam
Both Saudi Arabia and Vietnam sit inside the 9 AM – 5 PM working day between 9:00 AM–1:00 PM AST, which is 1:00 PM–5:00 PM ICT. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Saudi Arabia and Vietnam overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
Saudi Arabia is 4 hours ahead of Vietnam (AST UTC+03:00 → ICT UTC+07:00). The shared working window is 9:00 AM–1:00 PM AST. 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 Saudi Arabia and Vietnam?
Saudi Arabia (AST, UTC+03:00) is 4 hours ahead of Vietnam (ICT, UTC+07:00). The gap is currently +4h.
How do I convert Saudi Arabia time to Vietnam time?
Add +4h to Saudi Arabia local time. For example, 9:00 AM in Saudi Arabia is 1:00 PM in Vietnam.
What time is it in Vietnam right now?
Vietnam uses ICT at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +4h offset from Saudi Arabia.
What is the best time to call Vietnam from Saudi Arabia?
Call between 9:00 AM and 1:00 PM AST — that maps to 1:00 PM–5:00 PM ICT and keeps both parties inside the working day.
Which is ahead, Saudi Arabia or Vietnam?
Saudi Arabia is 4 hours ahead of Vietnam. When it is 12:00 PM in Saudi Arabia it is 4:00 PM in Vietnam.
Do Saudi Arabia and Vietnam use different time zones?
Saudi Arabia (Saudi Arabia) uses AST at UTC+03:00, while Vietnam (Vietnam) uses ICT at UTC+07:00. The IANA identifiers are Asia/Riyadh and Asia/Ho_Chi_Minh.
Does daylight saving time affect the Saudi Arabia–Vietnam difference?
Neither zone observes daylight saving time, so the +4h offset between Saudi Arabia and Vietnam is fixed all year.
Which other cities share Saudi Arabia's time zone?
AST also covers Riyadh, Jeddah, Doha, Kuwait City, Baghdad.
Which countries use AST, Saudi Arabia's zone?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Is there a day difference between Saudi Arabia and Vietnam?
Not normally. The +4h gap only pushes the date over for late-evening times.
What is the time difference between Saudi Arabia and Vietnam?
Vietnam is +4h from Saudi Arabia.
What timezone is Saudi Arabia in?
Saudi Arabia operates on its local timezone.
What timezone is Vietnam in?
Vietnam operates on its local timezone.
Which countries use AST (Arabia Standard Time)?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Does AST observe daylight saving time?
No, AST does not observe daylight saving time and remains at UTC+03:00 year-round.
What are some interesting facts about AST?
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.
Which cities are in the ICT timezone?
Major cities in the ICT timezone include Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
What is the UTC offset for ICT?
Indochina Time (ICT) is at UTC+07:00.
What should I know about the ICT timezone?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
When is it midnight in Saudi Arabia, what time is it in Vietnam?
When it is 12:00 AM (midnight) in Saudi Arabia (AST), it is +4h later in Vietnam (ICT).
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