Istanbul and Juba Time Zone Comparison
Istanbul and Juba are two major cities that sit in noticeably different time zones. Istanbul and Juba sit on different continents, in noticeably different time zones, and neither observes daylight saving time.
Juba is always 1 hour behind Istanbul, with no seasonal change, since neither city's daylight saving rules shift this relationship.
With such a small gap, scheduling a call between Istanbul and Juba is easy — a normal business-hours slot works for both sides on the same calendar day.