Prayer times explained: Fajr, Asr, Isha and timetable differences

What do the prayer names and timetable entries mean?

The Quran describes prayer as an obligation at appointed times. The hadith in Sahih Muslim 612a connects the prayer periods to observable changes in the sun and twilight. Modern calculations estimate those changes for a place and date. They do not turn worship into a single universal clock schedule: 12:00 noon on a phone is not necessarily local solar noon.

The table below identifies broad starting markers, not every preferred or final legal limit. Those limits require a fuller account of the school you follow, especially around Asr, Isha and exceptional circumstances. Namaz, salah, solat and sholat are common terms readers use for the same daily-prayer task.

Sources: [1] [3]

Why do location, date and time zone all matter?

Latitude and longitude describe where the sun is being calculated. A time zone describes how that instant appears on a clock. These are separate inputs. If you select London while your device is in Jakarta, London’s timetable still needs Europe/London, including its seasonal clock rules. An offset such as UTC+0 alone cannot describe a region that changes its clocks during the year.

Also compare the same local calendar date. Near midnight, two people looking at “today” in different countries may be checking different dates. For travel, save the destination city before relying on a reminder, inspect its date and zone, then update the settings again when you arrive. A saved home location does not move automatically with you.

Sources: [4] [6]

Why can Fajr and Isha differ between apps?

At dawn and after sunset, calculations often use how far the sun lies below the horizon. A larger dawn angle generally gives an earlier Fajr; a larger evening angle generally gives a later Isha for the same location and date when those events occur. Other methods use a fixed interval after Maghrib or seasonal rules. The method name therefore matters as much as the city name.

For example, the Adhan library documents Muslim World League settings of 18° for Fajr and 17° for Isha, while its North America preset uses 15° for both. Its Umm al-Qura preset uses an Isha interval, with an additional Ramadan adjustment needing explicit handling. These are calculation conventions, not evidence that one institution has certified this website’s output.

MyDeenPath’s Kemenag and JAKIM options are angle presets, not live official Indonesian or Malaysian zone timetables. The current minute adjustment applies to every displayed entry. Do not use it to fix an Isha-only discrepancy during Ramadan: that would move the other prayers too. Compare the relevant regional timetable instead.

Sources: [5] [6]

What is the difference between Hanafi and standard Asr?

The Asr setting changes the afternoon shadow criterion. The library’s earlier setting uses one object-length of additional shadow beyond the noon baseline; the Hanafi setting uses two. This generally places Hanafi Asr later. It does not mean the sun has been calculated for a different city, and changing a twilight angle will not resolve this particular difference.

Choose the convention used by the community or school whose timetable you follow. If you are meeting others for a congregation, check their actual iqamah separately. It is more informative to share “London, this date, this method, Hanafi Asr” than to send an isolated screenshot saying that a competing app is wrong.

Sources: [5]

How can I diagnose a mismatch in two timetables?

Compare settings before comparing brands. Write down the city coordinates, local date, time zone, calculation method, Asr option and any adjustments. Then examine the pattern across all six entries. The patterns below are useful troubleshooting clues rather than proof of a particular cause; local observation and authority adjustments can also explain a difference.

Sources: [4] [5] [6]

What happens where twilight or sunset does not occur?

In far northern or southern locations, seasonal twilight can persist and some solar events may not occur normally. A calculator may use an agreed portion-of-night rule, a regional timetable or another scholarly arrangement. A computed fallback is an estimate under that convention. It should never be silently presented as an observed dawn.

This site uses the Adhan library’s recommended high-latitude rule for the coordinates. In the current library version, that helper selects a seventh-of-the-night rule north of 48° latitude and a middle-of-the-night rule otherwise, including at far-southern latitudes. This is a software convention, not a universal religious ruling. If an event is unavailable, consult a local mosque or recognised regional authority instead of interpreting a blank result as midnight. For a journey into such a region, settle the timetable you will follow before departure.

Sources: [4] [5] [6]

How do mosque schedules and Ramadan fit in?

A prayer calculator estimates the beginning of a prayer window. A mosque may call the adhan then and begin its congregation later, or publish separate columns for each. Friday sermons, Eid prayers and special congregations also need the mosque’s own schedule. Calendar reminders from a calculation tool cannot substitute for that local information.

For fasting, distinguish Fajr from sunrise. Quran 2:187 describes the dawn boundary and fasting until night; ordinary Ramadan timetables associate iftar with Maghrib. Check the local fasting timetable and its explanatory notes. If an extra imsak column appears, establish what that authority means by it rather than assuming it is another prayer or the same event as sunrise.

Sources: [2] [3] [6]

How do I set up a dependable timetable on MyDeenPath?

Begin with the built-in city search or enter coordinates manually, then inspect the named time zone and calculation settings. Geolocation is optional. Compare a few days against a local source before exporting a month or using reminders. The regional timetable section links to global, Malaysian, Indonesian and UK resources for this cross-check.

Keep a short record of the settings you settled on and why. If you later change method, city or adjustment, regenerate your calendar export: an old downloaded file does not become a live subscription. Check how your calendar app displays the imported events while travelling. A correct event instant can still look unfamiliar when an app shows everything in the device’s current time zone.

• Confirm place, local date and IANA time zone.
• Match the calculation method and Asr convention to your local reference.
• Compare Fajr, Asr and Isha as well as sunset.
• Check mosque iqamah separately and regenerate exports after settings change.

Sources: [6]

Questions readers often ask

Put this into practice