Capital: Ankara · Single time zone (TRT, UTC+3, no daylight saving since 2016) · the only country on this list whose largest city sits on two continents at once.
METHOD: DIYANET İŞLERİ BAŞKANLIĞITurkey's prayer schedule is set by the Diyanet İşleri Başkanlığı (Presidency of Religious Affairs), a state institution founded in 1924 that oversees mosques, imam training and religious publishing across the whole country. Because Diyanet is a single centralised authority rather than a patchwork of regional or city bodies, virtually every mosque, printed calendar and prayer app in Turkey pulls from the same official calculation, which is unusual compared with countries where multiple methods compete for adoption.
Turkey abolished seasonal clock changes in 2016 and now stays on TRT (UTC+3) all year, which is part of why summer daylight in Istanbul or Ankara can feel unusually early-starting compared with neighbouring European countries that still shift their clocks each spring.
Istanbul is split by the Bosphorus strait, with roughly a third of the city sitting in Asia and the rest in Europe. Diyanet publishes one calendar per province rather than per continent, so both banks of the city share the same official Fajr-to-Isha schedule — the true east/west sun-position difference between them amounts to only seconds, far too small to appear on a printed timetable.
No — Diyanet publishes a single calendar per province, and any Istanbul-side difference is a matter of seconds, well below what would appear on a printed timetable.
Turkey abolished seasonal clock changes in 2016, staying on UTC+3 year-round, so unlike the UK or much of Europe, Turkish prayer-time swings across the year come purely from the sun, not from an added clock shift.
They're closely related but calculated separately — Diyanet is Turkey's own state religious authority's convention, and it's what virtually every mosque, mobile app and printed calendar in the country follows.