Istanbul zone
GMT+3 (GMT+3)
Sydney zone
GMT+10 (GMT+10)
Difference
7 hours ahead of Istanbul
Business overlap
1h (9-5 windows)
Working hours overlap
Each cell is one hour in Istanbul. Filled cells mark when 9 AM – 5 PM in Istanbul and Sydney both apply.
1 hour per day
- Istanbul
- GMT+3
- Sydney
- GMT+10
- Difference
- +7h
- Business overlap
- 1h
Hour-by-hour conversion
Each row shows the matching local time in Sydney for an hour in Istanbul.
| Istanbul | Sydney | Day | Window |
|---|---|---|---|
| 12:00 AM | 7:00 AM | same day | — |
| 1:00 AM | 8:00 AM | same day | — |
| 2:00 AM | 9:00 AM | same day | — |
| 3:00 AM | 10:00 AM | same day | — |
| 4:00 AM | 11:00 AM | same day | — |
| 5:00 AM | 12:00 PM | same day | — |
| 6:00 AM | 1:00 PM | same day | — |
| 7:00 AM | 2:00 PM | same day | — |
| 8:00 AM | 3:00 PM | same day | — |
| 9:00 AM | 4:00 PM | same day | Both 9-5 |
| 10:00 AM | 5:00 PM | same day | — |
| 11:00 AM | 6:00 PM | same day | — |
| 12:00 PM | 7:00 PM | same day | — |
| 1:00 PM | 8:00 PM | same day | — |
| 2:00 PM | 9:00 PM | same day | — |
| 3:00 PM | 10:00 PM | same day | — |
| 4:00 PM | 11:00 PM | same day | — |
| 5:00 PM | 12:00 AM | next day | — |
| 6:00 PM | 1:00 AM | next day | — |
| 7:00 PM | 2:00 AM | next day | — |
| 8:00 PM | 3:00 AM | next day | — |
| 9:00 PM | 4:00 AM | next day | — |
| 10:00 PM | 5:00 AM | next day | — |
| 11:00 PM | 6:00 AM | next day | — |
Best meeting windows
If both teams keep standard 9 AM – 5 PM hours, the overlap window is roughly 9:00 AM – 10:00 AM in Istanbul time. That gives you 1 hour per workday for live meetings.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Istanbul time to Sydney time
Istanbul follows the Europe/Istanbul time zone (currently GMT+3, GMT+3), while Sydney follows Australia/Sydney (currently GMT+10, GMT+10). Sydney is 7 hours ahead of Istanbul right now.
Sydney observes daylight saving time, while Istanbul does not. The offset between the two cities changes by one hour at the daylight saving transitions.
Daylight saving transitions in 2026
Istanbul
Does not observe daylight saving time.
Sydney
- Fall back · Sunday, April 5, 2026
- Spring forward · Sunday, October 4, 2026
Reverse this conversion
Sydney to Istanbul
Open the converter
Plan a meeting between Istanbul and Sydney
More conversions from Istanbul
Frequently asked questions
- How many hours is Istanbul from Sydney?
- Sydney is 7 hours ahead of Istanbul right now.
- What time is 9:00 AM Istanbul in Sydney?
- 9:00 AM in Istanbul is 4:00 PM in Sydney.
- What time is 5:00 PM Istanbul in Sydney?
- 5:00 PM in Istanbul is 12:00 AM (next day) in Sydney.
- When do Istanbul and Sydney business hours overlap?
- Standard 9 AM - 5 PM working hours overlap for about 1 hour, roughly from 9:00 AM to 10:00 AM in Istanbul time.
- Does daylight saving time change the difference between Istanbul and Sydney?
- Sydney observes daylight saving time while Istanbul does not, so the offset between them changes by one hour twice a year.
Local time page
Time in Istanbul
Local time page
Time in Sydney