Istanbul and Nis Time Zone Comparison
The distance between Istanbul and Nis is felt not just in kilometers, but in time zones too. Nis is in Europe, while Istanbul sits in the Middle East; their daylight saving rules also differ.
Because Istanbul and/or Nis 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 Nis is easy — a normal business-hours slot works for both sides on the same calendar day.