IST Europe to WIB
Time Difference
Irish Standard Time is 6 hours behind Western Indonesian Time
5:30 pm17:30 in IST is 11:30 pm23:30 in WIB
IST to WIB call time
Best time for a conference call or a meeting is between 8am-12pm in IST which corresponds to 2pm-6pm in WIB
5:30 pm17:30 Irish Standard Time (IST). Offset UTC +1:00 hour
11:30 pm23:30 Western Indonesian Time (WIB). Offset UTC +7:00 hours
5:30 pm17:30 IST / 11:30 pm23:30 WIB
IST | WIB |
---|---|
12am (midnight) | 6am |
1am | 7am |
2am | 8am |
3am | 9am |
4am | 10am |
5am | 11am |
6am | 12pm (noon) |
7am | 1pm |
8am | 2pm |
9am | 3pm |
10am | 4pm |
11am | 5pm |
12pm (noon) | 6pm |
1pm | 7pm |
2pm | 8pm |
3pm | 9pm |
4pm | 10pm |
5pm | 11pm |
6pm | 12am (midnight) |
7pm | 1am |
8pm | 2am |
9pm | 3am |
10pm | 4am |
11pm | 5am |
0:00 | 6:00 |
1:00 | 7:00 |
2:00 | 8:00 |
3:00 | 9:00 |
4:00 | 10:00 |
5:00 | 11:00 |
6:00 | 12:00 |
7:00 | 13:00 |
8:00 | 14:00 |
9:00 | 15:00 |
10:00 | 16:00 |
11:00 | 17:00 |
12:00 | 18:00 |
13:00 | 19:00 |
14:00 | 20:00 |
15:00 | 21:00 |
16:00 | 22:00 |
17:00 | 23:00 |
18:00 | 0:00 |
19:00 | 1:00 |
20:00 | 2:00 |
21:00 | 3:00 |
22:00 | 4:00 |
23:00 | 5:00 |
Irish Standard Time
Offset: IST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Ireland
Principal Cities: The largest city in the IST timezone is Dublin from Ireland with population about 1.024 million people. Other major cities in the area are Cork, Dun Laoghaire, Luimneach, Gaillimh

Daylight Saving: This is a standard timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Greenwich Mean Time (GMT).
Start: Irish Standard Time (IST) started on Sunday, March 30, 2025 at 3:00 am local time and clocks were set one hour back to Sunday, March 30, 2025, 2:00 am. Standard time starts annually the on last Sunday of October.
End: Irish Standard Time (IST) ends on Sunday, October 26, 2025 at 2:00 am local time and clocks are set one hour forward to Sunday, October 26, 2025, 3:00 am local daylight time instead. Standard time starts annually the on last Sunday of March.
IST representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates one hour and zero minutes time differences to the east of the zero meridian.
- Alpha - Military abbreviation for IST
- A - short form of 'Alpha'
- Eire
- Europe/Dublin
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
- Iran Standard Time - UTC +3:30
- BST - British Summer Time
- CET - Central European Time
- IST - Irish Standard Time
- WEST - Western European Summer Time
- A - Alpha Time Zone
- CET - Central European Time
- MEZ - Mitteleuropäische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean Time
Western Indonesian Time
Offset: WIB is 7 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: Indonesia
Principal Cities: The largest city in the WIB timezone is Jakarta from Indonesia with population about 8.54 million people. Other major cities in the area are Surabaya, Medan, Bandung, Bekasi
Daylight Saving: Western Indonesian Time (WIB) is not adjusted for daylight saving therefore WIB remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Western Indonesian Time remains the same

WIB representations, usage and related time zones
- +07 - basic short
- +0700 - basic
- +07:00 - extended
- +0700 - sign character (+) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates seven hour and zero minutes time differences to the east of the zero meridian.
- Golf - Military abbreviation for WIB
- G - short form of 'Golf'
- Asia/Jakarta
- Asia/Pontianak
- CXT - Christmas Island Time
- DAVT - Davis Time
- G - Golf Time Zone
- HOVT - Hovd Time
- ICT - Indochina Time
- KRAT - Krasnoyarsk Time
- NOVST - Novosibirsk Summer Time
- NOVT - Novosibirsk Time
- OMSST - Omsk Summer Time
- WIB - Western Indonesian Time