By the Insch team
Why prayer times differ between apps and your local mosque
Location, calculation methods and mosque timetables explained for Muslims in Europe.
GPS is only one part of the calculation
Prayer times depend on the date and the Sun’s position at your latitude and longitude. GPS helps identify that location; it does not determine which religious calculation convention to use. A city-centre location and your exact position can produce different times. Check the selected city, date and time zone first.
Why Fajr, Isha and Asr can differ
Calculation conventions use different twilight criteria for Fajr and Isha. Asr also depends on the selected shadow-length convention, commonly shown as standard or Hanafi. Rounding and timetable adjustments can add differences. Matching GPS coordinates alone will not make two methods agree.
Summer in Germany, France and the UK
At northern latitudes, summer twilight can last unusually long. Some locations do not reach the twilight angle required by a chosen method. Communities use different high-latitude approaches, so Fajr and Isha differences can be larger than a few minutes. Check the approach followed by your local mosque rather than assuming one method suits all of Europe.
Prayer start time is not always congregation time
A mosque may list both the start of a prayer window and a later congregational prayer (iqamah or jama’ah). Compare start time with start time. Ask the mosque which method and adjustments its timetable uses.
What to check in Insch
Check your location, calculation method and Asr setting in Insch. Compare the same date with a trusted local timetable. A difference does not automatically mean either timetable is wrong, but GPS alone cannot guarantee correctness. If a difference is large or unexplained, check your settings and ask your local mosque before relying on the time.