Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

GST to Santiago

-7h

GST

GSTSOURCE

UTC+04:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Santiago

CLST

Chile · UTC-03:00☀ DST active

HH05

MM00

05:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

GST

Santiago

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 CLST on the World Map

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

GST Zone

→

CLST 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

GST vs Santiago: Offsets, DST and Best Call Times

GST runs on Gulf Standard Time (GST) at UTC+04:00. Santiago runs on Chile Summer Time (CLST) at UTC-03:00, also currently on daylight saving time. That puts GST 7 hours behind Santiago — a difference of -7h at the current offsets.

In practice, when it is 9:00 AM in GST it is 2:00 AM in Santiago. Midnight in GST is 5:00 PM in Santiago.Santiago observes daylight saving time while GST does not, so the gap narrows or widens by an hour part of the year.

GST to Santiago time conversion table

GST (GST)	Santiago (CLST)	Day
12:00 AM	5:00 PM	previous day
6:00 AM	11:00 PM	previous day
7:00 AM	12:00 AM	same day
8:00 AM	1:00 AM	same day
9:00 AM	2:00 AM	same day
12:00 PM	5:00 AM	same day
3:00 PM	8:00 AM	same day
5:00 PM	10:00 AM	same day
6:00 PM	11:00 AM	same day
9:00 PM	2:00 PM	same day

Why people convert GST to Santiago time

Scheduling a call from GST to Santiago: a 10:00 AM start in GST lands at 3:00 AM in Santiago, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both GST and Santiago are inside the 9-to-5 working day between 4:00 PM and 5:00 PM GST time (9:00 AM–10:00 AM CLST). That is roughly 1 hours of usable overlap.
Coordinating a GST-based team with Santiago 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 -7h gap is not.
Block 4:00 PM–5:00 PM GST as the recurring meeting window if you work primarily from GST and need Santiago colleagues present.
Santiago: Clocks fall back on Sun, Apr 4, 2027. Any meeting series spanning that date will shift by an hour in local time.

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 Santiago

Both GST and Santiago sit inside the 9 AM – 5 PM working day between 4:00 PM–5:00 PM GST, which is 9:00 AM–10:00 AM CLST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

GST and Santiago overlap for only 60 minutes (4:00 PM–5:00 PM GST), so meetings have to be booked precisely.

GST is 7 hours behind Santiago (GST UTC+04:00 → CLST UTC-03:00). The shared working window is 4:00 PM–5:00 PM GST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

GST

Does not observe DST

Santiago

☀ 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 Santiago?

GST (GST, UTC+04:00) is 7 hours behind Santiago (CLST, UTC-03:00). The gap is currently -7h.

How do I convert GST time to Santiago time?

Add -7h to GST local time. For example, 9:00 AM in GST is 2:00 AM in Santiago.

What time is it in Santiago right now?

Santiago uses CLST at UTC-03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h offset from GST.

What is the best time to call Santiago from GST?

Call between 4:00 PM and 5:00 PM GST — that maps to 9:00 AM–10:00 AM CLST and keeps both parties inside the working day.

Which is behind, GST or Santiago?

GST is 7 hours behind Santiago. When it is 12:00 PM in GST it is 5:00 AM in Santiago.

Do GST and Santiago use different time zones?

GST uses GST at UTC+04:00, while Santiago (Chile) uses CLST at UTC-03:00. The IANA identifiers are Asia/Dubai and America/Santiago.

Does daylight saving time affect the GST–Santiago difference?

Yes at the moment: Santiago is on daylight saving time and GST is not, so the -7h gap shifts by an hour when exactly one of them changes clocks.

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 Santiago?

Not normally. The -7h gap only pushes the date over the previous day.

What is the time difference between GST and Santiago?

Santiago is -7h from GST.

What timezone is GST in?

GST operates on its local timezone.

What timezone is Santiago in?

Santiago 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.