Istanbul and Oslo Time Zone Comparison
Anyone curious about the time difference between Istanbul and Oslo usually also wants to know a bit about each city. Istanbul is Turkey's largest city and historic capital, uniquely straddling Europe and Asia across the Bosphorus strait. Oslo, the capital of Norway, sits at the head of a fjord and anchors the country's economy, which is built substantially on oil and natural gas wealth.
Because Istanbul and/or Oslo observe daylight saving time for part of the year, the gap between them isn't fixed — it ranges between 1 and 2 hours depending on the season.
With such a small gap, scheduling a call between Istanbul and Oslo is easy — a normal business-hours slot works for both sides on the same calendar day.