WIB to Ireland
-6hWIB
WIBSOURCEIreland
ISTGreen rows indicate typical business hours (9 AM - 5 PM)
WIB and IST on the World Map
The map below highlights the WIB (Western Indonesia Time) and IST (Greenwich Mean Time) timezone regions across the globe.
WIB – Western Indonesia Time
UTC+07:00Western Indonesia Time (WIB, UTC+07:00) covers Java, Sumatra and West Kalimantan, including Jakarta.
- •Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00).
- •Indonesia has not observed daylight saving time since 1964.
- •Jakarta is the largest city in Southeast Asia by population.
- •WIB shares the UTC+07:00 offset with Indochina Time.
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.
Comparing Time Zones: WIB and Ireland
WIB runs on Western Indonesia Time (WIB) at UTC+07:00. Ireland runs on Irish Standard Time (IST) at UTC+01:00, also currently on daylight saving time. That puts WIB 6 hours behind Ireland — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in WIB it is 3:00 AM in Ireland. Midnight in WIB is 6:00 PM in Ireland.Ireland observes daylight saving time while WIB does not, so the gap narrows or widens by an hour part of the year.
WIB to Ireland time conversion table
| WIB (WIB) | Ireland (IST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert WIB to Ireland time
- Scheduling a call from WIB to Ireland: a 10:00 AM start in WIB lands at 4:00 AM in Ireland, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both WIB and Ireland are inside the 9-to-5 working day between 3:00 PM and 5:00 PM WIB time (9:00 AM–11:00 AM IST). That is roughly 2 hours of usable overlap.
- Watching a live event or market open: WIB viewers need 3:00 AM in Ireland to catch a 9:00 AM start there, and 6:00 AM if the event is anchored to WIB.
- Always state the zone abbreviation, not just the hour. "3:00 PM WIB" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM WIB as the recurring meeting window if you work primarily from WIB 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 WIB (Western Indonesia Time)
Western Indonesia Time (WIB, Waktu Indonesia Barat) is one of Indonesia's three time zones, fixed at UTC+07:00 all year. It covers Java, Sumatra, West Kalimantan and the provinces around them — home to Jakarta, the country's capital and largest city, plus Surabaya and Bandung. Indonesia does not observe daylight saving time, so WIB never shifts. WIB shares its UTC+07:00 offset with Indochina Time (ICT) and Christmas Island Time, but is a distinct zone covering the western half of the Indonesian archipelago. The country's other zones are WITA (UTC+08:00) in the centre and WIT (UTC+09:00) in the east.
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 WIB and Ireland
Both WIB and Ireland sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM WIB, which is 9:00 AM–11:00 AM IST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
WIB and Ireland overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
WIB is 6 hours behind Ireland (WIB UTC+07:00 → IST UTC+01:00). The shared working window is 3:00 PM–5:00 PM WIB. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
WIB
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:
Frequently Asked Questions
What is the time difference between WIB and Ireland?
WIB (WIB, UTC+07:00) is 6 hours behind Ireland (IST, UTC+01:00). The gap is currently -6h.
How do I convert WIB time to Ireland time?
Add -6h to WIB local time. For example, 9:00 AM in WIB is 3:00 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 -6h offset from WIB.
What is the best time to call Ireland from WIB?
Call between 3:00 PM and 5:00 PM WIB — that maps to 9:00 AM–11:00 AM IST and keeps both parties inside the working day.
Which is behind, WIB or Ireland?
WIB is 6 hours behind Ireland. When it is 12:00 PM in WIB it is 6:00 AM in Ireland.
Do WIB and Ireland use different time zones?
WIB uses WIB at UTC+07:00, while Ireland (Ireland) uses IST at UTC+01:00. The IANA identifiers are Asia/Jakarta and Europe/Dublin.
Does daylight saving time affect the WIB–Ireland difference?
Yes at the moment: Ireland is on daylight saving time and WIB is not, so the -6h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share WIB's time zone?
WIB also covers Jakarta, Surabaya, Bandung, Medan, Palembang.
Which countries use WIB, WIB's zone?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Is there a day difference between WIB and Ireland?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between WIB and Ireland?
Ireland is -6h from WIB.
What timezone is WIB in?
WIB operates on its local timezone.
What timezone is Ireland in?
Ireland operates on its local timezone.
Which countries use WIB (Western Indonesia Time)?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Does WIB observe daylight saving time?
No, WIB does not observe daylight saving time and remains at UTC+07:00 year-round.
What are some interesting facts about WIB?
Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00). Indonesia has not observed daylight saving time since 1964.
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 WIB, what time is it in Ireland?
When it is 12:00 AM (midnight) in WIB (WIB), it is -6h later in Ireland (GMT).
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