Istanbul and Turku Time Zone Comparison
Anyone curious about the time difference between Istanbul and Turku usually also wants to know a bit about each city. Istanbul sits in the Middle East and keeps a fixed offset year-round, while Turku is in Europe and shifts its clocks seasonally.
Because Istanbul and/or Turku observe daylight saving time for part of the year, the gap between them isn't fixed — it ranges between 0 and 1 hours depending on the season.
With such a small gap, scheduling a call between Istanbul and Turku is easy — a normal business-hours slot works for both sides on the same calendar day.