This is a Google Chrome extension that shows the prayer times for Muslims. It uses HTML5 geolocation features that grabs the current latitude and longitute and fetches the prayer times.
This extension is developed by Mohamed Mansour but the prayer time calculations are based off the brother Dr. Hamid Zarrabi-Zadeh A list of contributions are listed in the AUTHORS file
There are differing opinions on what angle to use to calculate Fajr and Isha. It currently supports 6 different calculations.
| Convention | Fajr Angle | Isha Angle |
|---|---|---|
| Leva Research Institute, Qom, Iran* | 16 | 14 |
| University of Islamic Sciences, Karachi | 18 | 18 |
| Islamic Society of North America (ISNA), USA | 15 | 15 |
| Muslim World League (MWL) | 18 | 17 |
| Umm al-Qura, Makkah, Saudi Arabia | 19 | 90 mins after Maghrib |
| Egyptian General Authority of Survey | 19.5 | 17.5 |
*Leva Research Institute (L.R.I.) is a religious research center established in 1993 in Qom, Iran For example, according to L.R.I's convention, Fajr = Dhuhr - T(16), and Isha = Dhuhr + T(14).
For more information regarding the calculations, you can visit Dr.Hamid's FAQ