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).

AWST to Ireland

-7h

AWST

AWSTSOURCE

UTC+08:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Ireland

IST

UTC+01:00☀ DST active

HH05

MM00

05:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

AWST

Ireland

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)

AWST and IST on the World Map

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

AWST Zone

→

IST Zone

Explore all world timezones interactively →

AWST – Australian Western Standard Time

UTC+08:00

Australian Western Standard Time (AWST) is the time zone for Western Australia, 8 hours ahead of UTC.

Countries in AWST

Australia (Western Australia)

Major Cities in AWST

PerthMandurahBunburyGeraldton

Key Facts about AWST

•Western Australia does not observe daylight saving time.
•Perth is the most isolated major city in the world.
•AWST is the same offset as China Standard Time and Singapore Time.

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

Learn more about AWST 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

AWST vs Ireland: Offsets, DST and Best Call Times

AWST runs on Australian Western Standard Time (AWST) at UTC+08:00. Ireland runs on Irish Standard Time (IST) at UTC+01:00, also currently on daylight saving time. That puts AWST 7 hours behind Ireland — a difference of -7h at the current offsets.

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

AWST to Ireland time conversion table

AWST (AWST)	Ireland (IST)	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 AWST to Ireland time

Scheduling a call from AWST to Ireland: a 10:00 AM start in AWST lands at 3:00 AM in Ireland, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both AWST and Ireland are inside the 9-to-5 working day between 4:00 PM and 5:00 PM AWST time (9:00 AM–10:00 AM IST). That is roughly 1 hours of usable overlap.
Watching a live event or market open: AWST viewers need 2:00 AM in Ireland to catch a 9:00 AM start there, and 7:00 AM if the event is anchored to AWST.

Always state the zone abbreviation, not just the hour. "3:00 PM AWST" is unambiguous; "3 PM" across a -7h gap is not.
Block 4:00 PM–5:00 PM AWST as the recurring meeting window if you work primarily from AWST and need Ireland colleagues present.
Ireland: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.

About AWST (Australian Western Standard Time)

Australian Western Standard Time (AWST) is used in Western Australia. WA does not observe daylight saving time, having rejected it in multiple referendums. Perth is the most remote major city 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 AWST and Ireland

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

Business hours overlap

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

AWST is 7 hours behind Ireland (AWST UTC+08:00 → IST UTC+01:00). The shared working window is 4:00 PM–5:00 PM AWST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

AWST

Does not observe DST

Ireland

☀ 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 AWST and Ireland?

AWST (AWST, UTC+08:00) is 7 hours behind Ireland (IST, UTC+01:00). The gap is currently -7h.

How do I convert AWST time to Ireland time?

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

What time is it in Ireland right now?

Ireland uses IST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h offset from AWST.

What is the best time to call Ireland from AWST?

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

Which is behind, AWST or Ireland?

AWST is 7 hours behind Ireland. When it is 12:00 PM in AWST it is 5:00 AM in Ireland.

Do AWST and Ireland use different time zones?

AWST uses AWST at UTC+08:00, while Ireland (Ireland) uses IST at UTC+01:00. The IANA identifiers are Australia/Perth and Europe/Dublin.

Does daylight saving time affect the AWST–Ireland difference?

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

Which other cities share AWST's time zone?

AWST also covers Perth, Mandurah, Bunbury, Geraldton.

Which countries use AWST, AWST's zone?

AWST is used in Australia (Western Australia).

Is there a day difference between AWST and Ireland?

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

What is the time difference between AWST and Ireland?

Ireland is -7h from AWST.

What timezone is AWST in?

AWST operates on its local timezone.

What timezone is Ireland in?

Ireland operates on its local timezone.

Which countries use AWST (Australian Western Standard Time)?

AWST is used in Australia (Western Australia).

Does AWST observe daylight saving time?

No, AWST does not observe daylight saving time and remains at UTC+08:00 year-round.

What are some interesting facts about AWST?

Western Australia does not observe daylight saving time. Perth is the most isolated major city in the world.

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.