Institute of Geophysics, University of Tehran: cara mengira waktu solat
Kaedah Institute of Geophysics, University of Tehran menetapkan Subuh apabila matahari 17.7° di bawah ufuk, dan Isyak apabila 14° di bawah ufuk.
Maghrib: matahari 4.5° di bawah ufuk
Hari ini di Tehran: Subuh 4:34 PG · Isyak 6:56 PTG
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Kaedah pengiraan
- University of Islamic Sciences, Karachi
- Muslim World League
- ISNA (North America)
- Moonsighting Committee Worldwide
- Kemenag, Indonesia
- JAKIM
- Brunei
- Jaafari (Institut Leva, Qum)
- Umm al-Qura University, Makkah
- Dubai
- Qatar
- Kuwait
- Egyptian General Authority of Survey
- Diyanet, Turkey
- Islamic Community of Bosnia and Herzegovina
- Kosovo (fitted to the BIK takvim)
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- Grande Mosquée de Paris (fitted to its calendar)
- IGGÖ, Islamic Religious Community in Austria
- Muslim Executive of Belgium (fitted to its calendar)
- DUM RT, Spiritual Administration of Muslims of Tatarstan
- Muftiate of the Republic of Dagestan (fitted to its timetable)
- Caucasus Muslims Board (QMİ), Baku