GST to CST
-10hGST
GSTSOURCECST
CSTGreen rows indicate typical business hours (9 AM - 5 PM)
GST and CST on the World Map
The map below highlights the GST (Gulf Standard Time) and CST (Central Standard 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.
CST – Central Standard Time
UTC-06:00Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.
- •CST covers 20 US states fully or partially.
- •Chicago and Houston are the two largest cities in the Central Time Zone.
- •Mexico City, one of the world's most populous cities, operates on CST.
- •CST is 1 hour behind EST and 2 hours ahead of PST.
Understanding the -10h Gap: GST vs CST
GST runs on Gulf Standard Time (GST) at UTC+04:00. CST runs on Central Standard Time (CST) at UTC-06:00. That puts GST 10 hours behind CST — a difference of -10h at the current offsets.
In practice, when it is 9:00 AM in GST it is 11:00 PM in CST on the previous day. Midnight in GST is 2:00 PM in CST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GST to CST time conversion table
| GST (GST) | CST (CST) | Day |
|---|---|---|
| 12:00 AM | 2:00 PM | previous day |
| 6:00 AM | 8:00 PM | previous day |
| 7:00 AM | 9:00 PM | previous day |
| 8:00 AM | 10:00 PM | previous day |
| 9:00 AM | 11:00 PM | previous day |
| 12:00 PM | 2:00 AM | same day |
| 3:00 PM | 5:00 AM | same day |
| 5:00 PM | 7:00 AM | same day |
| 6:00 PM | 8:00 AM | same day |
| 9:00 PM | 11:00 AM | same day |
Why people convert GST to CST time
- Scheduling a call from GST to CST: a 10:00 AM start in GST lands at 12:00 AM in CST, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -10h gap: GST and CST 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 CST is 11:00 PM in GST.
- Watching a live event or market open: GST viewers need 11:00 PM in CST to catch a 9:00 AM start there, and 10:00 AM 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 -10h gap is not.
- With a -10h gap there is no shared 9-to-5 window, so alternate the early start: one week GST takes the early slot, the next week CST does.
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 CST (Central Standard Time)
Central Standard Time (CST) covers the central region of North America. It is the second most populous time zone in the US, including major cities like Chicago, Houston, and Dallas. CST is also used in Mexico City and much of Central America including Guatemala, Honduras, El Salvador, and Costa Rica. During summer, most of the US and Canada switch to Central Daylight Time (CDT, UTC-05:00), while Mexico and Central American countries generally remain on CST.
Best time to call between GST and CST
With a -10h offset there is no overlap inside a normal 9 AM – 5 PM day. CST opens at 9:00 AM CST, which is 11:00 PM in GST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
GST and CST have no shared working hours because of the -10h gap. Teams need to alternate early starts or rely on asynchronous handovers.
GST is 10 hours behind CST (GST UTC+04:00 → CST UTC-06:00). 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
GST
Does not observe DST
CST
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
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 CST?
GST (GST, UTC+04:00) is 10 hours behind CST (CST, UTC-06:00). The gap is currently -10h.
How do I convert GST time to CST time?
Add -10h to GST local time. For example, 9:00 AM in GST is 11:00 PM in CST (previous day).
What time is it in CST right now?
CST uses CST at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -10h offset from GST.
What is the best time to call CST from GST?
There is no shared working-hours window because of the -10h gap. The closest option is 1:00 PM in GST, which is 3:00 AM in CST.
Which is behind, GST or CST?
GST is 10 hours behind CST. When it is 12:00 PM in GST it is 2:00 AM in CST.
Does daylight saving time affect the GST–CST difference?
Neither zone observes daylight saving time, so the -10h offset between GST and CST 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 CST?
Not normally. The -10h gap only pushes the date over the previous day.
What is the time difference between GST and CST?
CST is -10h from GST.
What timezone is GST in?
GST operates on its local timezone.
What timezone is CST in?
CST 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 CST timezone?
Major cities in the CST timezone include Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis.
What is the UTC offset for CST?
Central Standard Time (CST) is at UTC-06:00. During daylight saving time, it shifts to CDT.
What should I know about the CST timezone?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
When is it midnight in GST, what time is it in CST?
When it is 12:00 AM (midnight) in GST (GST), it is -10h later in CST (CST).
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