Sydney zone
GMT+10 (GMT+10)
Istanbul zone
GMT+3 (GMT+3)
Difference
7 hours behind Sydney
Business overlap
1h (9-5 windows)
Working hours overlap
Each cell is one hour in Sydney. Filled cells mark when 9 AM – 5 PM in Sydney and Istanbul both apply.
1 hour per day
- Sydney
- GMT+10
- Istanbul
- GMT+3
- Difference
- -7h
- Business overlap
- 1h
Hour-by-hour conversion
Each row shows the matching local time in Istanbul for an hour in Sydney.
| Sydney | Istanbul | Day | Window |
|---|---|---|---|
| 12:00 AM | 5:00 PM | previous day | — |
| 1:00 AM | 6:00 PM | previous day | — |
| 2:00 AM | 7:00 PM | previous day | — |
| 3:00 AM | 8:00 PM | previous day | — |
| 4:00 AM | 9:00 PM | previous day | — |
| 5:00 AM | 10:00 PM | previous day | — |
| 6:00 AM | 11:00 PM | previous day | — |
| 7:00 AM | 12:00 AM | same day | — |
| 8:00 AM | 1:00 AM | same day | — |
| 9:00 AM | 2:00 AM | same day | — |
| 10:00 AM | 3:00 AM | same day | — |
| 11:00 AM | 4:00 AM | same day | — |
| 12:00 PM | 5:00 AM | same day | — |
| 1:00 PM | 6:00 AM | same day | — |
| 2:00 PM | 7:00 AM | same day | — |
| 3:00 PM | 8:00 AM | same day | — |
| 4:00 PM | 9:00 AM | same day | Both 9-5 |
| 5:00 PM | 10:00 AM | same day | — |
| 6:00 PM | 11:00 AM | same day | — |
| 7:00 PM | 12:00 PM | same day | — |
| 8:00 PM | 1:00 PM | same day | — |
| 9:00 PM | 2:00 PM | same day | — |
| 10:00 PM | 3:00 PM | same day | — |
| 11:00 PM | 4:00 PM | same day | — |
Best meeting windows
If both teams keep standard 9 AM – 5 PM hours, the overlap window is roughly 4:00 PM – 5:00 PM in Sydney 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 Sydney time to Istanbul time
Sydney follows the Australia/Sydney time zone (currently GMT+10, GMT+10), while Istanbul follows Europe/Istanbul (currently GMT+3, GMT+3). Istanbul is 7 hours behind Sydney 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
Sydney
- Fall back · Sunday, April 5, 2026
- Spring forward · Sunday, October 4, 2026
Istanbul
Does not observe daylight saving time.
Reverse this conversion
Istanbul to Sydney
Open the converter
Plan a meeting between Sydney and Istanbul
More conversions from Sydney
Frequently asked questions
- How many hours is Sydney from Istanbul?
- Istanbul is 7 hours behind Sydney right now.
- What time is 9:00 AM Sydney in Istanbul?
- 9:00 AM in Sydney is 2:00 AM in Istanbul.
- What time is 5:00 PM Sydney in Istanbul?
- 5:00 PM in Sydney is 10:00 AM in Istanbul.
- When do Sydney and Istanbul business hours overlap?
- Standard 9 AM - 5 PM working hours overlap for about 1 hour, roughly from 4:00 PM to 5:00 PM in Sydney time.
- Does daylight saving time change the difference between Sydney and Istanbul?
- 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 Sydney
Local time page
Time in Istanbul