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.

Dublin to AEST

+9h

Dublin

ISTSOURCE

Ireland · UTC+01:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

AEST

UTC+10:00DST observed

HH09

MM00

21:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Dublin

AEST

12:00 AM

9:00 AM

2:00 AM

11:00 AM

4:00 AM

1:00 PM

6:00 AM

3:00 PM

8:00 AM

5:00 PM

10:00 AM

7:00 PM

12:00 PM

9:00 PM

2:00 PM

11:00 PM

4:00 PM

1:00 AM+1

6:00 PM

3:00 AM+1

8:00 PM

5:00 AM+1

10:00 PM

7:00 AM+1

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

IST and AEST on the World Map

The map below highlights the IST (Greenwich Mean Time) and AEST (Australian Eastern Standard Time) timezone regions across the globe.

IST Zone

→

AEST 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

AEST – Australian Eastern Standard Time

UTC+10:00

Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.

Countries in AEST

Australia (NSW, VIC, QLD, TAS, ACT)Papua New Guinea

Major Cities in AEST

SydneyMelbourneBrisbaneCanberraHobartGold Coast

Key Facts about AEST

•Queensland does not observe daylight saving time, staying on AEST year-round.
•Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
•The Australian Securities Exchange (ASX) operates on AEST/AEDT.
•AEST is 15 hours ahead of EST during winter.

Daylight Saving:Yes – switches to AEDT

Learn more about AEST on Wikipedia

Comparing Time Zones: Dublin and AEST

Dublin runs on Irish Standard Time (IST) at UTC+01:00, currently observing daylight saving time. AEST runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts Dublin 9 hours ahead of AEST — a difference of +9h at the current offsets.

In practice, when it is 9:00 AM in Dublin it is 6:00 PM in AEST. Midnight in Dublin is 9:00 AM in AEST.Dublin observes daylight saving time while AEST does not, so the gap narrows or widens by an hour part of the year.

Dublin to AEST time conversion table

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

Why people convert Dublin to AEST time

Scheduling a call from Dublin to AEST: a 10:00 AM start in Dublin lands at 7:00 PM in AEST, so you can confirm the slot without doing the arithmetic yourself.
Handling a +9h gap: Dublin and AEST 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 AEST is 6:00 PM in Dublin.
Booking travel or deliveries: tracking AEST local time against Dublin keeps pickup windows and arrival estimates honest across the +9h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM IST" 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 Dublin takes the early slot, the next week AEST does.
Dublin: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +9h 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 AEST (Australian Eastern Standard Time)

Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.

Best time to call between Dublin and AEST

With a +9h offset there is no overlap inside a normal 9 AM – 5 PM day. AEST opens at 9:00 AM AEST, which is 6:00 PM in Dublin, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

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

Dublin is 9 hours ahead of AEST (IST UTC+01:00 → AEST UTC+10:00). 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

Dublin

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

AEST

❄ Currently in Standard Time

Standard: UTC+10:00 · DST: UTC+11:00

Clocks spring forward on Sat, Oct 3, 2026

⚠ These locations are currently in different DST states, so the time difference may change when clocks adjust.

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 AEST?

Dublin (IST, UTC+01:00) is 9 hours ahead of AEST (AEST, UTC+10:00). The gap is currently +9h.

How do I convert Dublin time to AEST time?

Add +9h to Dublin local time. For example, 9:00 AM in Dublin is 6:00 PM in AEST.

What time is it in AEST right now?

AEST uses AEST at UTC+10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +9h offset from Dublin.

What is the best time to call AEST from Dublin?

There is no shared working-hours window because of the +9h gap. The closest option is 1:00 PM in Dublin, which is 10:00 PM in AEST.

Which is ahead, Dublin or AEST?

Dublin is 9 hours ahead of AEST. When it is 12:00 PM in Dublin it is 9:00 PM in AEST.

Do Dublin and AEST use different time zones?

Dublin (Ireland) uses IST at UTC+01:00, while AEST uses AEST at UTC+10:00. The IANA identifiers are Europe/Dublin and Australia/Sydney.

Does daylight saving time affect the Dublin–AEST difference?

Yes at the moment: Dublin is on daylight saving time and AEST is not, so the +9h 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 AEST?

Not normally. The +9h gap only pushes the date over for late-evening times.

What is the time difference between Dublin and AEST?

AEST is +9h from Dublin.

What timezone is Dublin in?

Dublin operates on its local timezone.

What timezone is AEST in?

AEST 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.