Prayer Times Calculator
The five daily prayer times are five positions of the Sun, and this page solves for each of them. Enter a date, a latitude, a longitude and a UTC offset, choose a calculation method such as Muslim World League, ISNA, Umm al-Qura, Egyptian or Karachi, and pick the standard or Hanafi Asr shadow rule; the result gives Fajr, sunrise, Dhuhr, Asr, Maghrib and Isha with the angle behind each one, or a timetable of up to a month. Nothing here looks up a time zone, so the offset you give must already include daylight saving. Where the Sun never reaches the Fajr or Isha depression on a short summer night, the page says so rather than inventing a time.