Opening the comparison.

The 24 cities

Reykjavik, Helsinki, Oslo, Stockholm, Moscow, Berlin, London, Toronto, Istanbul, New York, Casablanca, Cairo, Karachi, Dhaka, Makkah, Lagos, Kuala Lumpur, Nairobi, Jakarta, Johannesburg, Sydney, Cape Town, Buenos Aires, Christchurch: a fixed, named set, north to south, never "the world".

  1. Your figure is your timetable row. Maghrib minus Fajr in whole minutes, from the same engine and the same cautious rounding as the timetable.
  2. The same date in each city's own time zone. With your method, Asr rule, high latitude rule and angles, but without your mosque's minute adjustments.
  3. A city with no Fajr by your rule is left out. The sentence then says the real number of cities.

Times are calculated; follow your local mosque for the start of the month and for prayer times.

Every rule is on how it works. For the children's charts and a Quran reading plan, use the pack builder.