Инструменты Intosoft

GST to CDT

-9h

GST

GSTSOURCE
UTC+04:00
HH12
:
MM00
  
12:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM

CDT

CDT
UTC-05:00☀ DST active
HH03
:
MM00
  
03:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM
GST
CDT
12:00 AM
3:00 PM-1
2:00 AM
5:00 PM-1
4:00 AM
7:00 PM-1
6:00 AM
9:00 PM-1
8:00 AM
11:00 PM-1
10:00 AM
1:00 AM
12:00 PM
3:00 AM
2:00 PM
5:00 AM
4:00 PM
7:00 AM
6:00 PM
9:00 AM
8:00 PM
11:00 AM
10:00 PM
1:00 PM

Green rows indicate typical business hours (9 AM - 5 PM)

GST and CDT on the World Map

The map below highlights the GST (Gulf Standard Time) and CDT (Central Daylight Time) timezone regions across the globe.

GSTCDTDubaiAbu DhabiMuscatBakuChicagoHoustonDallasAustin
GST Zone
→
CDT Zone

Explore all world timezones interactively →

GST – Gulf Standard Time

UTC+04:00

Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.

Countries in GST
UAEOmanGeorgiaAzerbaijanMauritius
Major Cities in GST
DubaiAbu DhabiMuscatBakuTbilisi
Key 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.
  • •The Dubai Financial Market (DFM) operates on GST.
Daylight Saving:No – UTC+04:00 year-round
Learn more about GST on Wikipedia

CDT – Central Daylight Time

UTC-05:00

Central Daylight Time (CDT) is the daylight saving offset in the Central Time Zone, 5 hours behind UTC.

Countries in CDT
United States (Central)Canada (Manitoba)
Major Cities in CDT
ChicagoHoustonDallasAustinWinnipegNashville
Key Facts about CDT
  • •CDT is the same offset as EST (UTC-05:00), which can cause confusion.
  • •CDT runs from the second Sunday in March to the first Sunday in November.
Daylight Saving:Yes – switches to CST
Learn more about CDT on Wikipedia

Everything You Need to Know About GST and CDT Time

GST runs on Gulf Standard Time (GST) at UTC+04:00. CDT runs on Central Daylight Time (CDT) at UTC-05:00. That puts GST 9 hours behind CDT — a difference of -9h at the current offsets.

In practice, when it is 9:00 AM in GST it is 12:00 AM in CDT. Midnight in GST is 3:00 PM in CDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

GST to CDT time conversion table

GST (GST)CDT (CDT)Day
12:00 AM3:00 PMprevious day
6:00 AM9:00 PMprevious day
7:00 AM10:00 PMprevious day
8:00 AM11:00 PMprevious day
9:00 AM12:00 AMsame day
12:00 PM3:00 AMsame day
3:00 PM6:00 AMsame day
5:00 PM8:00 AMsame day
6:00 PM9:00 AMsame day
9:00 PM12:00 PMsame day

Why people convert GST to CDT time

  • Scheduling a call from GST to CDT: a 10:00 AM start in GST lands at 1:00 AM in CDT, so you can confirm the slot without doing the arithmetic yourself.
  • Handling a -9h gap: GST and CDT 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 CDT is 12:00 AM in GST.
  • Coordinating a GST-based team with CDT 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 GST" is unambiguous; "3 PM" across a -9h gap is not.
  • With a -9h gap there is no shared 9-to-5 window, so alternate the early start: one week GST takes the early slot, the next week CDT 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 CDT (Central Daylight Time)

Central Daylight Time (CDT) is observed during summer months in the US and Canadian portions of the Central Time Zone. Clocks are moved forward by one hour, aligning with Eastern Standard Time (EST). Most of Mexico and Central America do not observe CDT, staying on CST year-round.

Best time to call between GST and CDT

With a -9h offset there is no overlap inside a normal 9 AM – 5 PM day. CDT opens at 9:00 AM CDT, which is 12:00 AM in GST, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

GST and CDT have no shared working hours because of the -9h gap. Teams need to alternate early starts or rely on asynchronous handovers.

GST is 9 hours behind CDT (GST UTC+04:00 → CDT UTC-05:00). 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

CDT

☀ 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:

⏳
History of Timekeeping
From sundials to atomic clocks - 5000 years of measuring time
🌍
How Time Zones Work
UTC, offsets, and why zones don't follow straight lines
☀️
Daylight Saving Time
DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between GST and CDT?

GST (GST, UTC+04:00) is 9 hours behind CDT (CDT, UTC-05:00). The gap is currently -9h.

How do I convert GST time to CDT time?

Add -9h to GST local time. For example, 9:00 AM in GST is 12:00 AM in CDT.

What time is it in CDT right now?

CDT uses CDT at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -9h offset from GST.

What is the best time to call CDT from GST?

There is no shared working-hours window because of the -9h gap. The closest option is 1:00 PM in GST, which is 4:00 AM in CDT.

Which is behind, GST or CDT?

GST is 9 hours behind CDT. When it is 12:00 PM in GST it is 3:00 AM in CDT.

Does daylight saving time affect the GST–CDT difference?

Neither zone observes daylight saving time, so the -9h offset between GST and CDT 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 CDT?

Not normally. The -9h gap only pushes the date over the previous day.

What is the time difference between GST and CDT?

CDT is -9h from GST.

What timezone is GST in?

GST operates on its local timezone.

What timezone is CDT in?

CDT 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 CDT timezone?

Major cities in the CDT timezone include Chicago, Houston, Dallas, Austin, Winnipeg, Nashville.

What is the UTC offset for CDT?

Central Daylight Time (CDT) is at UTC-05:00. During daylight saving time, it shifts to CST.

What should I know about the CDT timezone?

CDT is the same offset as EST (UTC-05:00), which can cause confusion. CDT runs from the second Sunday in March to the first Sunday in November.

When is it midnight in GST, what time is it in CDT?

When it is 12:00 AM (midnight) in GST (GST), it is -9h later in CDT (CDT).

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Related Timezone Conversions

gst→dubaigst→uaegst→new yorkgst→londoncdt→chicagocdt→cstcdt→new yorkcdt→london

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