Izmir and Rennes Time Zone Comparison
Izmir and Rennes are two major cities that sit in noticeably different time zones. Izmir and Rennes sit on different continents, in noticeably different time zones, and at least one of them observes daylight saving time.
Because Izmir and/or Rennes 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 Izmir and Rennes is easy — a normal business-hours slot works for both sides on the same calendar day.