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).

Chile to United Kingdom

+4h

Chile

CLSTSOURCE

UTC-03:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

United Kingdom

BST

UTC+01:00☀ DST active

HH04

MM00

16:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Chile

United Kingdom

12:00 AM

4:00 AM

2:00 AM

6:00 AM

4:00 AM

8:00 AM

6:00 AM

10:00 AM

8:00 AM

12:00 PM

10:00 AM

2:00 PM

12:00 PM

4:00 PM

2:00 PM

6:00 PM

4:00 PM

8:00 PM

6:00 PM

10:00 PM

8:00 PM

12:00 AM+1

10:00 PM

2:00 AM+1

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

CLST and BST on the World Map

The map below highlights the CLST (Chile Standard Time) and BST (Greenwich Mean Time) timezone regions across the globe.

CLST Zone

→

BST Zone

Explore all world timezones interactively →

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

GMT – Greenwich Mean Time

UTC+00:00

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.

Countries in GMT

United KingdomIrelandIcelandPortugal (mainland)GhanaSenegalMaliMauritaniaGambiaGuineaSierra LeoneLiberiaIvory CoastBurkina FasoMorocco (historically)

Major Cities in GMT

LondonDublinLisbonAccraReykjavikEdinburghCasablancaDakarBamakoAbidjanConakryFreetownMonrovia

Key Facts about GMT

•GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
•The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
•GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
•Iceland uses GMT year-round and never observes daylight saving time.
•The UK switches from GMT to BST (British Summer Time) in late March each year.

Daylight Saving:Yes – switches to BST

Learn more about GMT on Wikipedia

Chile to United Kingdom Time Difference – Complete Guide

Chile runs on Chile Summer Time (CLST) at UTC-03:00, currently observing daylight saving time. United Kingdom runs on British Summer Time (BST) at UTC+01:00, also currently on daylight saving time. That puts Chile 4 hours ahead of United Kingdom — a difference of +4h at the current offsets.

In practice, when it is 9:00 AM in Chile it is 1:00 PM in United Kingdom. Midnight in Chile is 4:00 AM in United Kingdom. Because both zones shift for daylight saving, the gap between them only changes during the few weeks each year when their transition dates differ.

Chile to United Kingdom time conversion table

Chile (CLST)	United Kingdom (BST)	Day
12:00 AM	4:00 AM	same day
6:00 AM	10:00 AM	same day
7:00 AM	11:00 AM	same day
8:00 AM	12:00 PM	same day
9:00 AM	1:00 PM	same day
12:00 PM	4:00 PM	same day
3:00 PM	7:00 PM	same day
5:00 PM	9:00 PM	same day
6:00 PM	10:00 PM	same day
9:00 PM	1:00 AM	next day

Why people convert Chile to United Kingdom time

Scheduling a call from Chile to United Kingdom: a 10:00 AM start in Chile lands at 2:00 PM in United Kingdom, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Chile and United Kingdom are inside the 9-to-5 working day between 9:00 AM and 1:00 PM CLST time (1:00 PM–5:00 PM BST). That is roughly 4 hours of usable overlap.
Coordinating a Chile-based team with United Kingdom 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 CLST" is unambiguous; "3 PM" across a +4h gap is not.
Block 9:00 AM–1:00 PM CLST as the recurring meeting window if you work primarily from Chile and need United Kingdom colleagues present.
Chile: Clocks fall back on Sun, Apr 4, 2027. Re-check this page after that date because the offset changes and so does the +4h gap.
United Kingdom: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.

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.

About GMT (Greenwich Mean Time)

Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.

Best time to call between Chile and United Kingdom

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

Business hours overlap

Chile and United Kingdom overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.

Chile is 4 hours ahead of United Kingdom (CLST UTC-03:00 → BST UTC+01:00). The shared working window is 9:00 AM–1:00 PM CLST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Chile

☀ Currently in DST

Standard: UTC-04:00 · DST: UTC-03:00

Clocks fall back on Sun, Apr 4, 2027

United Kingdom

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 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 Chile and United Kingdom?

Chile (CLST, UTC-03:00) is 4 hours ahead of United Kingdom (BST, UTC+01:00). The gap is currently +4h.

How do I convert Chile time to United Kingdom time?

Add +4h to Chile local time. For example, 9:00 AM in Chile is 1:00 PM in United Kingdom.

What time is it in United Kingdom right now?

United Kingdom uses BST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +4h offset from Chile.

What is the best time to call United Kingdom from Chile?

Call between 9:00 AM and 1:00 PM CLST — that maps to 1:00 PM–5:00 PM BST and keeps both parties inside the working day.

Which is ahead, Chile or United Kingdom?

Chile is 4 hours ahead of United Kingdom. When it is 12:00 PM in Chile it is 4:00 PM in United Kingdom.

Do Chile and United Kingdom use different time zones?

Chile (Chile) uses CLST at UTC-03:00, while United Kingdom (United Kingdom) uses BST at UTC+01:00. The IANA identifiers are America/Santiago and Europe/London.

Does daylight saving time affect the Chile–United Kingdom difference?

Both zones observe DST, so the difference stays at +4h for most of the year and only changes during the weeks when their transition dates do not line up.

Which other cities share Chile's time zone?

CLST also covers Santiago, Valparaíso, Concepción, Viña del Mar, Antofagasta.

Which countries use CLST, Chile's zone?

CLST is used in Chile.

Is there a day difference between Chile and United Kingdom?

Not normally. The +4h gap only pushes the date over for late-evening times.

What is the time difference between Chile and United Kingdom?

United Kingdom is +4h from Chile.

What timezone is Chile in?

Chile operates on its local timezone.

What timezone is United Kingdom in?

United Kingdom operates on its local timezone.

Which countries use CLT (Chile Standard Time)?

CLT is used in Chile.

Does CLT observe daylight saving time?

Yes, CLT switches to CLST during summer months.

What are some interesting 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.

Which cities are in the GMT timezone?

Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.

What is the UTC offset for GMT?

Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.

What should I know about the GMT timezone?

GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.