Istanbul is usually 7 hours behind Newcastle. Newcastle observes daylight saving time and Istanbul does not, so the difference shifts by an hour around the changeovers.

IstanbulNewcastle

Sunrise 5:51 AMSunset 8:31 PM(local)

Sunrise 6:51 AMSunset 5:09 PM(local)

Newcastle: standard timeNow UTC+10. Next change: October 4, 2026 — clocks go forward 1 hour.
IstanbulUTC+3
NewcastleUTC+10

🇹🇷 Istanbul

Dialing code+90
Population15,701,602
Coordinates41.01°N, 28.95°E
Elevation39 m

🇦🇺 Newcastle

Dialing code+61
Population508,437
Coordinates32.93°S, 151.78°E
Elevation48 m

Best time for a call: 09:00–11:00 in IstanbulAdd to calendar

Working hours assumed 9:00–18:00.

Frequently asked questions

What is the time difference between Istanbul and Newcastle?
Istanbul is 7 hours behind Newcastle. Use the side-by-side clocks and the day/night strips above to convert any hour between them.
When is the best time to call between Istanbul and Newcastle?
The best window to call is 09:00–11:00 Istanbul time, when working hours overlap in both cities. Pick an hour on the strips to add it to your calendar.
Why does the time difference between Istanbul and Newcastle change?
Because at least one of Istanbul and Newcastle observes daylight saving time, the difference shifts by an hour when one city changes its clocks and the other has not yet (or does not).