Offset
The time difference between Vienna and Istanbul is 1 hour.
Vienna (CEST) is behind Istanbul (TRT).
CEST: UTC+2
TRT: UTC+3
Vienna is currently observing daylight saving time; Istanbul is not.
When to schedule
Business-hours overlap: 9 AM–4 PM in Vienna (10 AM–5 PM in Istanbul).
Both teams are in working hours during this window on weekdays.
Suggested time: 12:00 PM Vienna (1:00 PM Istanbul).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Austria
- New Year's DayThu, Jan 1
- EpiphanyTue, Jan 6
- Easter SundaySun, Apr 5
- Easter MondayMon, Apr 6
- National HolidayFri, May 1
- Ascension DayThu, May 14
- PentecostSun, May 24
- Whit MondayMon, May 25
- Corpus ChristiThu, Jun 4
- Assumption DaySat, Aug 15
- National HolidayMon, Oct 26
- All Saints' DaySun, Nov 1
- Immaculate ConceptionTue, Dec 8
- Christmas DayFri, Dec 25
- St. Stephen's DaySat, Dec 26
Turkey
- New Year's DayThu, Jan 1
- National Independence & Children's DayThu, Apr 23
- Labour DayFri, May 1
- Atatürk Commemoration & Youth DayTue, May 19
- Democracy and National Unity DayWed, Jul 15
- Victory DaySun, Aug 30
- Republic DayThu, Oct 29
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Vienna | Istanbul | Day |
|---|---|---|
| 12:00 am | 1:00 am | Same day |
| 1:00 am | 2:00 am | Same day |
| 2:00 am | 3:00 am | Same day |
| 3:00 am | 4:00 am | Same day |
| 4:00 am | 5:00 am | Same day |
| 5:00 am | 6:00 am | Same day |
| 6:00 am | 7:00 am | Same day |
| 7:00 am | 8:00 am | Same day |
| 8:00 am | 9:00 am | Same day |
| 9:00 am | 10:00 am | Same day |
| 10:00 am | 11:00 am | Same day |
| 11:00 am | 12:00 pm | Same day |
| 12:00 pm | 1:00 pm | Same day |
| 1:00 pm | 2:00 pm | Same day |
| 2:00 pm | 3:00 pm | Same day |
| 3:00 pm | 4:00 pm | Same day |
| 4:00 pm | 5:00 pm | Same day |
| 5:00 pm | 6:00 pm | Same day |
| 6:00 pm | 7:00 pm | Same day |
| 7:00 pm | 8:00 pm | Same day |
| 8:00 pm | 9:00 pm | Same day |
| 9:00 pm | 10:00 pm | Same day |
| 10:00 pm | 11:00 pm | Same day |
| 11:00 pm | 12:00 am | +1 day |
Daylight saving time
Vienna observes daylight saving time; Istanbul does not. The offset between the two zones changes when Vienna transitions: on Sunday, October 25, 2026, clocks fall back from CEST to CET.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:14 AM
- Sunset
- 8:48 PM
- Day length
- 15h 34m
- Sunrise
- 5:49 AM
- Sunset
- 8:34 PM
- Day length
- 14h 45m
Daylight overlap: 14h 19m — 5:14 AM–7:34 PM in Vienna (6:14 AM–8:34 PM in Istanbul). Both locations are in daylight during this window.
Cities in these zones
Other cities in Turkey Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Central European Time
- VIE
Airports in Turkey Time
- IST
- SAW
- ESB
- YEI
- ADB
- GZT
- DIY
- ADA
- COV
- ASR
Related conversions
Common conversions
- What is 9:00 am Vienna in Istanbul?
- 9:00 am Vienna is 10:00 am Istanbul.
- What is 12:00 pm Vienna in Istanbul?
- 12:00 pm Vienna is 1:00 pm Istanbul.
- What is 12:30 pm Vienna in Istanbul?
- 12:30 pm Vienna is 1:30 pm Istanbul.
- What is 2:00 pm Vienna in Istanbul?
- 2:00 pm Vienna is 3:00 pm Istanbul.
- What is 5:00 pm Vienna in Istanbul?
- 5:00 pm Vienna is 6:00 pm Istanbul.
- What is 11:30 pm Vienna in Istanbul?
- 11:30 pm Vienna is 12:30 am Istanbul, the next day.