Istanbul and Lisbon Time Zone Comparison
Istanbul and Lisbon are two major cities that sit in noticeably different time zones. Istanbul is Turkey's largest city and historic capital, uniquely straddling Europe and Asia across the Bosphorus strait. Lisbon, the capital of Portugal, is one of Europe's most Atlantic-facing cities and, unlike most of mainland Europe, uses Western European Time — the same zone family as London.
Because Istanbul and/or Lisbon observe daylight saving time for part of the year, the gap between them isn't fixed — it ranges between 2 and 3 hours depending on the season.
With a moderate gap like this, it's worth checking the suggested call window above before scheduling a meeting between Istanbul and Lisbon.