Istanbul and São Tomé Time Zone Comparison
Anyone curious about the time difference between Istanbul and São Tomé usually also wants to know a bit about each city. Istanbul is in the Middle East and São Tomé is in Africa — thousands of kilometers apart.
São Tomé is always 3 hours behind Istanbul, with no seasonal change, since neither city's daylight saving rules shift this relationship.
With a moderate gap like this, it's worth checking the suggested call window above before scheduling a meeting between Istanbul and São Tomé.