Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

GST to CLT

-8h

GST

GSTSOURCE

UTC+04:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

CLT

UTC-03:00☀ DST active

HH04

MM00

04:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

GST

CLT

12:00 AM

5:00 PM-1

2:00 AM

7:00 PM-1

4:00 AM

9:00 PM-1

6:00 AM

11:00 PM-1

8:00 AM

1:00 AM

10:00 AM

3:00 AM

12:00 PM

5:00 AM

2:00 PM

7:00 AM

4:00 PM

9:00 AM

6:00 PM

11:00 AM

8:00 PM

1:00 PM

10:00 PM

3:00 PM

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

GST and CLT on the World Map

The map below highlights the GST (Gulf Standard Time) and CLT (Chile Standard Time) timezone regions across the globe.

GST Zone

→

CLT 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

CLT – Chile Standard Time

UTC-04:00

Chile Standard Time (CLT) is the time zone for continental Chile, 4 hours behind UTC.

Countries in CLT

Chile

Major Cities in CLT

SantiagoValparaísoConcepciónViña del MarAntofagasta

Key Facts about CLT

•Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer.
•Santiago is the largest city in Chile with over 6 million in the metro area.
•Chile spans over 4,300 km from north to south but uses one timezone.

Daylight Saving:Yes – switches to CLST

Learn more about CLT on Wikipedia

Everything You Need to Know About GST and CLT Time

GST runs on Gulf Standard Time (GST) at UTC+04:00. CLT runs on Chile Standard Time (CLT) at UTC-04:00. That puts GST 8 hours behind CLT — a difference of -8h at the current offsets.

In practice, when it is 9:00 AM in GST it is 1:00 AM in CLT. Midnight in GST is 4:00 PM in CLT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

GST to CLT time conversion table

GST (GST)	CLT (CLT)	Day
12:00 AM	4:00 PM	previous day
6:00 AM	10:00 PM	previous day
7:00 AM	11:00 PM	previous day
8:00 AM	12:00 AM	same day
9:00 AM	1:00 AM	same day
12:00 PM	4:00 AM	same day
3:00 PM	7:00 AM	same day
5:00 PM	9:00 AM	same day
6:00 PM	10:00 AM	same day
9:00 PM	1:00 PM	same day

Why people convert GST to CLT time

Scheduling a call from GST to CLT: a 10:00 AM start in GST lands at 2:00 AM in CLT, so you can confirm the slot without doing the arithmetic yourself.
Handling a -8h gap: GST and CLT 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 CLT is 1:00 AM in GST.
Keeping family and friends in sync: knowing that 8:00 PM in GST is 12:00 PM in CLT makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM GST" 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 GST takes the early slot, the next week CLT 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 CLT (Chile Standard Time)

Chile Standard Time (CLT) is the standard time in Chile. During summer months (October to March), Chile switches to Chile Summer Time (CLST, UTC-03:00). Chile is the longest north-south country in the world.

Best time to call between GST and CLT

With a -8h offset there is no overlap inside a normal 9 AM – 5 PM day. CLT opens at 9:00 AM CLT, which is 1:00 AM in GST, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

GST and CLT have no shared working hours because of the -8h gap. Teams need to alternate early starts or rely on asynchronous handovers.

GST is 8 hours behind CLT (GST UTC+04:00 → CLT 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

GST

Does not observe DST

CLT

☀ Currently in DST

Standard: UTC-04:00 · DST: UTC-03:00

Clocks fall back on Sun, Apr 4, 2027

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 CLT?

GST (GST, UTC+04:00) is 8 hours behind CLT (CLT, UTC-04:00). The gap is currently -8h.

How do I convert GST time to CLT time?

Add -8h to GST local time. For example, 9:00 AM in GST is 1:00 AM in CLT.

What time is it in CLT right now?

CLT uses CLT 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 GST.

What is the best time to call CLT from GST?

There is no shared working-hours window because of the -8h gap. The closest option is 1:00 PM in GST, which is 5:00 AM in CLT.

Which is behind, GST or CLT?

GST is 8 hours behind CLT. When it is 12:00 PM in GST it is 4:00 AM in CLT.

Does daylight saving time affect the GST–CLT difference?

Neither zone observes daylight saving time, so the -8h offset between GST and CLT 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 CLT?

Not normally. The -8h gap only pushes the date over the previous day.

What is the time difference between GST and CLT?

CLT is -8h from GST.

What timezone is GST in?

GST operates on its local timezone.

What timezone is CLT in?

CLT 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 CLT timezone?

Major cities in the CLT timezone include Santiago, Valparaíso, Concepción, Viña del Mar, Antofagasta.

What is the UTC offset for CLT?

Chile Standard Time (CLT) is at UTC-04:00. During daylight saving time, it shifts to CLST.

What should I know about the CLT timezone?

Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer. Santiago is the largest city in Chile with over 6 million in the metro area.