Lisbon to Ireland
+0hLisbon
WESTSOURCEIreland
ISTGreen rows indicate typical business hours (9 AM - 5 PM)
WEST and IST on the World Map
The map below highlights the WEST (Western European Time) and IST (Greenwich Mean Time) timezone regions across the globe.
WET – Western European Time
UTC+00:00Western European Time (WET) is the time zone for Portugal, Morocco, and the Canary Islands, same as UTC+00:00.
- •Portugal is the only mainland European country in the WET time zone.
- •The Canary Islands are on WET despite being part of Spain (which uses CET).
- •WET is identical to GMT and UTC+00:00.
GMT – Greenwich Mean Time
UTC+00:00Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.
- •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.
About Lisbon
WikipediaLisbon operates on Western European Time (WET/WEST), same as London. As Portugal's capital and an emerging tech hub, Lisbon bridges European and Atlantic time zones.
Lisbon has 300 days of sunshine per year and is a major startup hub in Europe.
Lisbon vs Ireland: Offsets, DST and Best Call Times
Lisbon runs on Western European Summer Time (WEST) at UTC+01:00, currently observing daylight saving time. Ireland runs on Irish Standard Time (IST) at UTC+01:00, also currently on daylight saving time. That puts Lisbon no time difference Ireland — a difference of +0h at the current offsets.
In practice, when it is 9:00 AM in Lisbon it is 9:00 AM in Ireland. Midnight in Lisbon is 12:00 AM in Ireland. Because both zones shift for daylight saving, the gap between them only changes during the few weeks each year when their transition dates differ.
Lisbon to Ireland time conversion table
| Lisbon (WEST) | Ireland (IST) | Day |
|---|---|---|
| 12:00 AM | 12:00 AM | same day |
| 6:00 AM | 6:00 AM | same day |
| 7:00 AM | 7:00 AM | same day |
| 8:00 AM | 8:00 AM | same day |
| 9:00 AM | 9:00 AM | same day |
| 12:00 PM | 12:00 PM | same day |
| 3:00 PM | 3:00 PM | same day |
| 5:00 PM | 5:00 PM | same day |
| 6:00 PM | 6:00 PM | same day |
| 9:00 PM | 9:00 PM | same day |
Why people convert Lisbon to Ireland time
- Scheduling a call from Lisbon to Ireland: a 10:00 AM start in Lisbon lands at 10:00 AM in Ireland, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Lisbon and Ireland are inside the 9-to-5 working day between 9:00 AM and 5:00 PM WEST time (9:00 AM–5:00 PM IST). That is roughly 8 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Lisbon is 8:00 PM in Ireland makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM WEST" is unambiguous; "3 PM" across a +0h gap is not.
- Block 9:00 AM–5:00 PM WEST as the recurring meeting window if you work primarily from Lisbon and need Ireland colleagues present.
- Lisbon: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +0h gap.
- Ireland: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
About WET (Western European Time)
Western European Time (WET) is used in Portugal, the Canary Islands (Spain), Morocco, and several other locations. It is equivalent to GMT/UTC. During summer, Portugal and the Canary Islands switch to WEST (Western European Summer Time, UTC+01:00).
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 Lisbon and Ireland
Both Lisbon and Ireland sit inside the 9 AM – 5 PM working day between 9:00 AM–5:00 PM WEST, which is 9:00 AM–5:00 PM IST. That gives roughly 8 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Lisbon and Ireland share 8 hours of working-hours overlap (9:00 AM–5:00 PM WEST), so scheduling a live meeting is straightforward.
Lisbon is no time difference Ireland (WEST UTC+01:00 → IST UTC+01:00). The shared working window is 9:00 AM–5:00 PM WEST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Lisbon
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
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:
Frequently Asked Questions
What is the time difference between Lisbon and Ireland?
Lisbon (WEST, UTC+01:00) is no time difference Ireland (IST, UTC+01:00). The gap is currently +0h.
How do I convert Lisbon time to Ireland time?
Add +0h to Lisbon local time. For example, 9:00 AM in Lisbon is 9:00 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 +0h offset from Lisbon.
What is the best time to call Ireland from Lisbon?
Call between 9:00 AM and 5:00 PM WEST — that maps to 9:00 AM–5:00 PM IST and keeps both parties inside the working day.
Which is ahead, Lisbon or Ireland?
Lisbon and Ireland are currently on the same clock.
Do Lisbon and Ireland use different time zones?
Lisbon (Portugal) uses WEST at UTC+01:00, while Ireland (Ireland) uses IST at UTC+01:00. The IANA identifiers are Europe/Lisbon and Europe/Dublin.
Does daylight saving time affect the Lisbon–Ireland difference?
Both zones observe DST, so the difference stays at +0h for most of the year and only changes during the weeks when their transition dates do not line up.
Which other cities share Lisbon's time zone?
WEST also covers Lisbon, Porto, Casablanca, Las Palmas, Funchal, Rabat.
Which countries use WEST, Lisbon's zone?
WEST is used in Portugal, Spain (Canary Islands), Morocco, Western Sahara.
What is the time difference between Lisbon and Ireland?
Ireland is +0h from Lisbon.
What timezone is Lisbon in?
Lisbon operates on Western European Time (WET/WEST), same as London. As Portugal's capital and an emerging tech hub, Lisbon bridges European and Atlantic time zones.
What timezone is Ireland in?
Ireland operates on its local timezone.
What are the business hours in Lisbon?
Standard business hours in Lisbon are 9:00 AM - 6:00 PM WET.
Which countries use WET (Western European Time)?
WET is used in Portugal, Spain (Canary Islands), Morocco, Western Sahara.
Does WET observe daylight saving time?
Yes, WET switches to WEST during summer months.
What are some interesting facts about WET?
Portugal is the only mainland European country in the WET time zone. The Canary Islands are on WET despite being part of Spain (which uses CET).
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.
When is it midnight in Lisbon, what time is it in Ireland?
When it is 12:00 AM (midnight) in Lisbon (WET), it is +0h later in Ireland (GMT).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Lisbon time conversions
- lisbon to wet
- lisbon to portugal
- lisbon to london
- lisbon to dublin
- lisbon to paris
- lisbon to berlin
- lisbon to amsterdam
- lisbon to madrid
- lisbon to rome
- lisbon to zurich
- lisbon to stockholm
- lisbon to moscow
- lisbon to istanbul
- lisbon to warsaw
- lisbon to new york
- lisbon to dubai
- lisbon to tokyo
- lisbon to singapore
- lisbon to sydney
- lisbon to los angeles
- lisbon to delhi
- lisbon to mumbai
- lisbon to hong kong
- lisbon to toronto
- lisbon to kathmandu
- new york to lisbon
- london to lisbon
- dubai to lisbon
- tokyo to lisbon
- singapore to lisbon
- sydney to lisbon
- los angeles to lisbon
- paris to lisbon
- delhi to lisbon
- mumbai to lisbon
- berlin to lisbon
See every conversion from Lisbon →·See every conversion from Ireland →