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).

Dublin to SGT

+7h

Dublin

ISTSOURCE

Ireland · UTC+01:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

SGT

UTC+08:00

HH07

MM00

19:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Dublin

SGT

12:00 AM

7:00 AM

2:00 AM

9:00 AM

4:00 AM

11:00 AM

6:00 AM

1:00 PM

8:00 AM

3:00 PM

10:00 AM

5:00 PM

12:00 PM

7:00 PM

2:00 PM

9:00 PM

4:00 PM

11:00 PM

6:00 PM

1:00 AM+1

8:00 PM

3:00 AM+1

10:00 PM

5:00 AM+1

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

IST and SGT on the World Map

The map below highlights the IST (Greenwich Mean Time) and SGT (Singapore Standard Time) timezone regions across the globe.

IST Zone

→

SGT Zone

Explore all world timezones interactively →

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

SGT – Singapore Standard Time

UTC+08:00

Singapore Standard Time (SGT) is the time zone for Singapore, 8 hours ahead of UTC.

Countries in SGT

Singapore

Major Cities in SGT

Singapore

Key Facts about SGT

•Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00).
•Singapore does not observe daylight saving time.
•The Singapore Exchange (SGX) operates on SGT.

Daylight Saving:No – UTC+08:00 year-round

Learn more about SGT on Wikipedia

Understanding the +7h Gap: Dublin vs SGT

Dublin runs on Irish Standard Time (IST) at UTC+01:00, currently observing daylight saving time. SGT runs on Singapore Standard Time (SGT) at UTC+08:00. That puts Dublin 7 hours ahead of SGT — a difference of +7h at the current offsets.

In practice, when it is 9:00 AM in Dublin it is 4:00 PM in SGT. Midnight in Dublin is 7:00 AM in SGT.Dublin observes daylight saving time while SGT does not, so the gap narrows or widens by an hour part of the year.

Dublin to SGT time conversion table

Dublin (IST)	SGT (SGT)	Day
12:00 AM	7:00 AM	same day
6:00 AM	1:00 PM	same day
7:00 AM	2:00 PM	same day
8:00 AM	3:00 PM	same day
9:00 AM	4:00 PM	same day
12:00 PM	7:00 PM	same day
3:00 PM	10:00 PM	same day
5:00 PM	12:00 AM	next day
6:00 PM	1:00 AM	next day
9:00 PM	4:00 AM	next day

Why people convert Dublin to SGT time

Scheduling a call from Dublin to SGT: a 10:00 AM start in Dublin lands at 5:00 PM in SGT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Dublin and SGT are inside the 9-to-5 working day between 9:00 AM and 10:00 AM IST time (4:00 PM–5:00 PM SGT). That is roughly 1 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Dublin is 3:00 AM in SGT makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a +7h gap is not.
Block 9:00 AM–10:00 AM IST as the recurring meeting window if you work primarily from Dublin and need SGT colleagues present.
Dublin: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +7h gap.

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.

About SGT (Singapore Standard Time)

Singapore Standard Time (SGT) is used in Singapore year-round. Singapore does not observe daylight saving time. Despite being geographically close to the UTC+07:00 zone, Singapore uses UTC+08:00 to align with major trading partners like China, Hong Kong, and Malaysia. Singapore is a major global financial hub.

Best time to call between Dublin and SGT

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

Business hours overlap

Dublin and SGT overlap for only 60 minutes (9:00 AM–10:00 AM IST), so meetings have to be booked precisely.

Dublin is 7 hours ahead of SGT (IST UTC+01:00 → SGT UTC+08:00). The shared working window is 9:00 AM–10:00 AM IST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Dublin

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

SGT

Does not observe DST

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 Dublin and SGT?

Dublin (IST, UTC+01:00) is 7 hours ahead of SGT (SGT, UTC+08:00). The gap is currently +7h.

How do I convert Dublin time to SGT time?

Add +7h to Dublin local time. For example, 9:00 AM in Dublin is 4:00 PM in SGT.

What time is it in SGT right now?

SGT uses SGT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +7h offset from Dublin.

What is the best time to call SGT from Dublin?

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

Which is ahead, Dublin or SGT?

Dublin is 7 hours ahead of SGT. When it is 12:00 PM in Dublin it is 7:00 PM in SGT.

Do Dublin and SGT use different time zones?

Dublin (Ireland) uses IST at UTC+01:00, while SGT uses SGT at UTC+08:00. The IANA identifiers are Europe/Dublin and Asia/Singapore.

Does daylight saving time affect the Dublin–SGT difference?

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

Which other cities share Dublin's time zone?

IST also covers London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar and 5 more.

Which countries use IST, Dublin's zone?

IST is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, Mali, Mauritania and 7 more.

Is there a day difference between Dublin and SGT?

Not normally. The +7h gap only pushes the date over for late-evening times.

What is the time difference between Dublin and SGT?

SGT is +7h from Dublin.

What timezone is Dublin in?

Dublin operates on its local timezone.

What timezone is SGT in?

SGT operates on its local timezone.

Which countries use GMT (Greenwich Mean Time)?

GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, and 9 more countries.

Does GMT observe daylight saving time?

Yes, GMT switches to BST during summer months.

What are some interesting 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.