Istanbul to Ruma time converter
Ruma is 1 hour behind Istanbul. When it is 9:00 AM in Istanbul, it is 8:00 AM in Ruma.
7:11 AM in Istanbul, Monday, October 19, 2026
Istanbul to Ruma conversion table
Every hour of today in Istanbul and the matching time in Ruma. Light rows are typical working hours (9:00–18:00).
| Istanbul | Ruma |
|---|---|
| 12:00 AM | 11:00 PM−1 day |
| 1:00 AM | 12:00 AM |
| 2:00 AM | 1:00 AM |
| 3:00 AM | 2:00 AM |
| 4:00 AM | 3:00 AM |
| 5:00 AM | 4:00 AM |
| 6:00 AM | 5:00 AM |
| 7:00 AM | 6:00 AM |
| 8:00 AM | 7:00 AM |
| 9:00 AM | 8:00 AM |
| 10:00 AM | 9:00 AM |
| 11:00 AM | 10:00 AM |
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
| 2:00 PM | 1:00 PM |
| 3:00 PM | 2:00 PM |
| 4:00 PM | 3:00 PM |
| 5:00 PM | 4:00 PM |
| 6:00 PM | 5:00 PM |
| 7:00 PM | 6:00 PM |
| 8:00 PM | 7:00 PM |
| 9:00 PM | 8:00 PM |
| 10:00 PM | 9:00 PM |
| 11:00 PM | 10:00 PM |
Best time to call or meet
Both sides are at work from 10:00 AM – 6:00 PM in Istanbul (9:00 AM – 5:00 PM in Ruma).
Daylight saving time and the difference
The difference changes during the year because Istanbul and Ruma switch clocks on different dates:
- Oct 19, 2026 – Oct 25, 2026: -1h
- Oct 25, 2026 – Mar 28, 2027: -2h
- Mar 28, 2027 – Oct 19, 2027: -1h
Distance
Istanbul and Ruma are 864 km (537 miles) apart in a straight line.
More conversions
Questions and answers
What is the time difference between Istanbul and Ruma?
Ruma is 1 hour behind Istanbul.
What time is it in Ruma when it is 9 AM in Istanbul?
When it is 9:00 AM in Istanbul, it is 8:00 AM in Ruma.
When is the best time to call Ruma from Istanbul?
Both sides are at work from 10:00 AM – 6:00 PM in Istanbul (9:00 AM – 5:00 PM in Ruma).
Does the time difference between Istanbul and Ruma change?
Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.