GST to ICT
+3hGST
GSTSOURCEICT
ICTGreen rows indicate typical business hours (9 AM - 5 PM)
GST and ICT on the World Map
The map below highlights the GST (Gulf Standard Time) and ICT (Indochina Time) timezone regions across the globe.
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.
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.
GST vs ICT: Offsets, DST and Best Call Times
GST runs on Gulf Standard Time (GST) at UTC+04:00. ICT runs on Indochina Time (ICT) at UTC+07:00. That puts GST 3 hours ahead of ICT — a difference of +3h at the current offsets.
In practice, when it is 9:00 AM in GST it is 12:00 PM in ICT. Midnight in GST is 3:00 AM in ICT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GST to ICT time conversion table
| GST (GST) | ICT (ICT) | Day |
|---|---|---|
| 12:00 AM | 3:00 AM | same day |
| 6:00 AM | 9:00 AM | same day |
| 7:00 AM | 10:00 AM | same day |
| 8:00 AM | 11:00 AM | same day |
| 9:00 AM | 12:00 PM | same day |
| 12:00 PM | 3:00 PM | same day |
| 3:00 PM | 6:00 PM | same day |
| 5:00 PM | 8:00 PM | same day |
| 6:00 PM | 9:00 PM | same day |
| 9:00 PM | 12:00 AM | next day |
Why people convert GST to ICT time
- Scheduling a call from GST to ICT: a 10:00 AM start in GST lands at 1:00 PM in ICT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both GST and ICT are inside the 9-to-5 working day between 9:00 AM and 2:00 PM GST time (12:00 PM–5:00 PM ICT). That is roughly 5 hours of usable overlap.
- Watching a live event or market open: GST viewers need 12:00 PM in ICT to catch a 9:00 AM start there, and 9:00 PM if the event is anchored to GST.
- Always state the zone abbreviation, not just the hour. "3:00 PM GST" is unambiguous; "3 PM" across a +3h gap is not.
- Block 9:00 AM–2:00 PM GST as the recurring meeting window if you work primarily from GST and need ICT colleagues present.
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.
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 GST and ICT
Both GST and ICT sit inside the 9 AM – 5 PM working day between 9:00 AM–2:00 PM GST, which is 12:00 PM–5:00 PM ICT. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
GST and ICT share 5 hours of working-hours overlap (9:00 AM–2:00 PM GST), so scheduling a live meeting is straightforward.
GST is 3 hours ahead of ICT (GST UTC+04:00 → ICT UTC+07:00). The shared working window is 9:00 AM–2:00 PM GST. 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 GST and ICT?
GST (GST, UTC+04:00) is 3 hours ahead of ICT (ICT, UTC+07:00). The gap is currently +3h.
How do I convert GST time to ICT time?
Add +3h to GST local time. For example, 9:00 AM in GST is 12:00 PM in ICT.
What time is it in ICT right now?
ICT 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 +3h offset from GST.
What is the best time to call ICT from GST?
Call between 9:00 AM and 2:00 PM GST — that maps to 12:00 PM–5:00 PM ICT and keeps both parties inside the working day.
Which is ahead, GST or ICT?
GST is 3 hours ahead of ICT. When it is 12:00 PM in GST it is 3:00 PM in ICT.
Does daylight saving time affect the GST–ICT difference?
Neither zone observes daylight saving time, so the +3h offset between GST and ICT is fixed all year.
Which other cities share GST's time zone?
GST also covers Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
Which countries use GST, GST's zone?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Is there a day difference between GST and ICT?
Not normally. The +3h gap only pushes the date over for late-evening times.
What is the time difference between GST and ICT?
ICT is +3h from GST.
What timezone is GST in?
GST operates on its local timezone.
What timezone is ICT in?
ICT operates on its local timezone.
Which countries use GST (Gulf Standard Time)?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Does GST observe daylight saving time?
No, GST does not observe daylight saving time and remains at UTC+04:00 year-round.
What are some interesting facts about GST?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
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 GST, what time is it in ICT?
When it is 12:00 AM (midnight) in GST (GST), it is +3h later in ICT (ICT).
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