Iftarkar is a Web App which provides Iftar and Sahar timings during the Holy month of Ramadan for the regions of Jammu, Kashmir, Ladakh and Kargil. The Web App is available as a website from where it can be installed on every platform. It is also available on Google Play Store.
We use the following sources for the different timings:
Muslim World League: Muslim World League. Standard Fajr time with an angle of 18°. Earlier Isha time with an angle of 17°.
Egyptian General Authority of Survey: Egyptian General Authority of Survey. Early Fajr time using an angle 19.5° and a slightly earlier Isha time using an angle of 17.5°.
University of Islamic Sciences, Karachi: University of Islamic Sciences, Karachi. A generally applicable method that uses standard Fajr and Isha angles of 18°.
Umm al-Qura University, Makkah: Umm al-Qura University, Makkah. Uses a fixed interval of 90 minutes from maghrib to calculate Isha. And a slightly earlier Fajr time with an angle of 18.5°. Note: you should add a +30 minute custom adjustment for Isha during Ramadan.
Dubai: Used in the UAE. Slightly earlier Fajr time and slightly later Isha time with angles of 18.2° for Fajr and Isha in addition to 3 minute offsets for sunrise, Dhuhr, Asr, and Maghrib.
Qatar: Same Isha interval as UmmAlQura but with the standard Fajr time using an angle of 18°.
Kuwait: Standard Fajr time with an angle of 18°. Slightly earlier Isha time with an angle of 17.5°.
Moonsighting Committee: Method developed by Khalid Shaukat, founder of Moonsighting Committee Worldwide. Uses standard 18° angles for Fajr and Isha in addition to seasonal adjustment values. This method automatically applies the 1/7 approximation rule for locations above 55° latitude. Recommended for North America and the UK.
Singapore, Malaysia, and Indonesia: Used in Singapore, Malaysia, and Indonesia. Early Fajr time with an angle of 20° and standard Isha time with an angle of 18°.
Turkey: An approximation of the Diyanet method used in Turkey. This approximation is less accurate outside the region of Turkey.
University of Tehran: Institute of Geophysics, University of Tehran. Early Isha time with an angle of 14°. Slightly later Fajr time with an angle of 17.7°. Calculates Maghrib based on the sun reaching an angle of 4.5° below the horizon.
Islamic Society of North America: Can be used for North America, but the moonsightingCommittee method is preferable. Gives later Fajr times and early Isha times with angles of 15°.
Shia Ithna Ashari, Leva Research Institute, Qum: Timings from Leva Research Institute, Qum