How Prayer Times Are Calculated: The Astronomy Behind Fajr to Isha
A plain-language explanation of how the five daily prayer times are worked out from the sun's position, and why they change through the year and from city to city.
Read the guide →Clear explanations of the astronomy and rulings behind the five daily prayer times.
A plain-language explanation of how the five daily prayer times are worked out from the sun's position, and why they change through the year and from city to city.
Read the guide →Why different apps show different Fajr and Isha times: the angles used by the main calculation methods, how big the difference is, and how to choose one.
Read the guide →The two shadow-length rules for the start of Asr, how much later Hanafi Asr begins, and how to pick the right one on a prayer timetable.
Read the guide →How Muslims in northern Europe and other high-latitude places work out Fajr and Isha when the sun barely sets: the main approaches and the reasoning behind them.
Read the guide →Practical ways to find the direction of the Kaaba from anywhere: the great-circle bearing, a phone compass, and the twice-a-year shadow method.
Read the guide →A clear overview of Fajr, Dhuhr, Asr, Maghrib and Isha: when each prayer begins and ends, how many obligatory rak'ahs each has, plus Jumu'ah and Witr.
Read the guide →How the Islamic lunar calendar works, why Ramadan moves through the seasons, the twelve months, and why the start of a month can differ by a day between countries.
Read the guide →How the fasting day in Ramadan is tied to Fajr and Maghrib, what Imsak means, and how to use a prayer timetable to plan suhoor and iftar.
Read the guide →The real reasons two prayer timetables disagree by a few minutes, from calculation methods and iqamah times to daylight saving and rounding.
Read the guide →An introduction to the travel concessions in prayer: shortening four-rak'ah prayers, combining prayers, the distance question and how schools differ.
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