Daily Prayer Time Calculator
Overview of the Daily Prayer Time Calculator
This daily prayer time calculator turns local sunrise and sunset into a simple, approximate prayer outline for Fajr, Dhuhr, Asr, Maghrib, and Isha. It is meant for planning and learning, not for replacing a mosque timetable or a scholarly ruling. That difference matters because real prayer schedules often depend on twilight angles, true solar noon, and school-specific Asr rules that cannot be recovered from sunrise and sunset alone. By using only the two daylight anchors, the calculator gives you a quick map of the day that is easy to read, easy to share, and useful when you need a rough schedule fast.
If you are traveling, waiting for a local timetable, or just trying to understand how the day of prayer is shaped by the sun, this page gives you a practical starting point. It can help when you already know sunrise and sunset from a weather app, a forecast, or a city almanac but do not yet have a full prayer chart. The result should be treated as a guide: Fajr lands before dawn, Dhuhr settles near midday, Asr comes later in the afternoon, Maghrib starts at sunset, and Isha follows in the evening. Before depending on any time for observance, especially for congregational prayer or Ramadan planning, confirm with a trusted local source.
How to Use the Daily Prayer Time Calculator
To estimate daily prayer times, enter the sunrise and sunset values for the date and place you care about, then press Calculate Times. The two fields use 24-hour time, so 05:30 means 5:30 in the morning and 18:45 means 6:45 in the evening. After you submit the form, the calculator shows estimated times for Fajr, Dhuhr, Asr, Maghrib, and Isha in a compact list. If your browser supports the clipboard feature, the copy button lets you save the result in a notes app, a message, or a calendar reminder.
Enter the times exactly as your local clock shows them. If daylight saving time is in effect, use the daylight-saving version of the times rather than the standard-time version. The calculator does not identify your time zone, guess your longitude, or adjust the inputs behind the scenes. It assumes that the sunrise and sunset values you provide are already correct for the day and location you want to examine.
One practical rule still matters: sunset should come after sunrise on the same local day. That is the normal pattern in most places, but extreme latitudes can produce very long days, very short nights, or twilight patterns that make a simplified model less useful. In those cases, this page is best treated as a conceptual guide, while actual prayer planning should follow recognized local guidance.
Formula Behind the Daily Prayer Time Calculator
The daily prayer time calculator converts sunrise and sunset into minutes after midnight, then applies fixed offsets to estimate the day’s five prayer times. Let sunrise be represented by SR and sunset by SS. The daylight duration is the difference between those two values:
Once the daylight length is known, the calculator places each prayer with a deliberately simple rule. Fajr is set 90 minutes before sunrise. Dhuhr is placed at the midpoint of the daylight period. Asr is set 90 minutes after Dhuhr. Maghrib is placed at sunset. Isha is set 90 minutes after Maghrib. These are not official jurisprudential definitions; they are practical approximations that produce a readable daily structure.
The MathML expressions below show the same sunrise-to-sunset model in compact form:
Fajr is estimated as , where is sunrise in minutes after midnight.
Dhuhr is estimated as , where is the daylight length.
Asr is estimated as . Maghrib is the sunset time itself, and Isha is estimated as .
Because the method is intentionally simple, it should be understood as a model rather than a formal calculation standard. Official prayer timetables often use solar depression angles such as 18°, 15°, or 12° for Fajr and Isha, and they may include local adjustments, safety margins, or school-specific rules for Asr. This calculator does none of that. Its strength is speed and clarity, not legal or astronomical precision.
What the Inputs Mean for Daily Prayer Times
In this daily prayer time calculator, the sunrise field should hold the local civil time when the sun appears above the horizon. The sunset field should hold the local civil time when the sun disappears below the horizon. These values are usually easy to find in weather apps, almanacs, phone widgets, or city timetables. The calculator does not ask for latitude, longitude, elevation, or date because it assumes you have already gathered the sunrise and sunset values for the day you care about.
That design keeps the tool simple, and it also explains why the result is an estimate rather than a full astronomical calculation. Without coordinates, it cannot compute true solar noon. Without the date, it cannot model seasonal twilight behavior. Without a selected calculation method, it cannot match the conventions used by a particular mosque, country, or prayer app. The output is best viewed as a planning guide built from two daylight anchors.
Worked Example for a Sunrise-and-Sunset Prayer Schedule
For a typical day, suppose sunrise is 06:10 and sunset is 19:55. First convert both times into minutes after midnight. Sunrise becomes 370 minutes, and sunset becomes 1195 minutes. The daylight duration is therefore 1195 − 370 = 825 minutes, which is 13 hours and 45 minutes. Dhuhr is placed halfway through that daylight span, so it falls 412.5 minutes after sunrise, or around 13:03 after rounding. Asr is then placed 90 minutes later, around 14:33. Maghrib is at sunset, 19:55. Isha is 90 minutes after that, around 21:25. Fajr is 90 minutes before sunrise, around 04:40.
This example makes the calculator’s logic easy to follow. Every estimate comes from either the daylight midpoint or a fixed offset from sunrise or sunset, so the schedule is transparent even when it is only approximate. That simplicity is helpful when you want a quick prayer plan, but it also explains why the result can differ from a mosque timetable by several minutes or more, especially for Fajr and Isha.
Interpreting the Prayer Time Results
A result from this daily prayer time calculator should be read as a planning guide, not a formal timetable. Fajr marks the pre-dawn period before sunrise. Dhuhr marks the middle of the daylight period. Asr marks a later-afternoon point after Dhuhr. Maghrib aligns with sunset. Isha marks the evening period after sunset. If the page notes that Fajr falls before midnight or that Isha extends past midnight, that simply means the calculator is wrapping the time into a 24-hour clock. The note is there to show how the estimate relates to the calendar day.
Small differences from official schedules are normal. A mosque timetable may use true solar noon for Dhuhr, a shadow-based rule for Asr, and angle-based twilight definitions for Fajr and Isha. It may also include local conventions or precautionary adjustments. This calculator deliberately leaves out those details so the method stays visible and easy to understand.
Why Daily Prayer-Time Estimates Can Differ from Official Timetables
| Factor | What official timetables may do | What this calculator does |
|---|---|---|
| Fajr and Isha definition | Uses twilight angles such as 18°, 15°, or 12°, sometimes with local adjustments | Uses fixed offsets from sunrise and sunset |
| Dhuhr | Computes true solar noon using longitude and the equation of time | Uses the midpoint of daylight |
| Asr | Uses shadow-length criteria that may vary by madhhab | Places Asr 90 minutes after Dhuhr |
| High latitudes | May apply special rules for persistent twilight or unusual day length | No high-latitude method is built in |
| Time zone and DST | Often determined automatically by location and date | Assumes your entered times already match local clock time |
Limitations and Assumptions for Daily Prayer Time Estimates
This daily prayer time calculator is intentionally modest in scope. It does not replace a recognized prayer timetable, and it should not be treated as a legal ruling or official schedule. It assumes that sunrise and sunset are known accurately, that the local day behaves normally, and that a fixed 90-minute offset is acceptable for rough planning. It does not model atmospheric refraction, elevation, latitude, longitude, date-specific solar behavior, or school-specific Asr definitions. Those omissions are not mistakes; they are part of the simplified design.
For many users, that simplicity is still useful. A traveler may only need a reasonable estimate until reaching a destination. A student may want a quick way to understand how the prayers spread across the day. Someone learning about Islamic practice may appreciate seeing how sunrise and sunset anchor the schedule. In all of those cases, the calculator serves as a teaching and planning aid. For actual observance, especially when precision matters, verify with a trusted local mosque, scholar, or established prayer app.
Background and Practical Context for Daily Prayer Times
Daily prayer times structure the day around recurring moments of remembrance and worship. Fajr belongs to the quiet pre-dawn hours. Dhuhr arrives after the sun has risen high and the day is underway. Asr comes later in the afternoon, often while work or study is still in progress. Maghrib begins at sunset, marking a clear transition from day to evening. Isha follows after night has settled in. Even a simplified calculator can make that rhythm visible, especially for people building habits, setting reminders, or trying to understand the relationship between prayer and the sun’s daily motion.
Historically, Muslims observed prayer times through direct awareness of the sky, shadows, and twilight. Modern software can now compute those times with great precision using astronomical formulas and geolocation. This page takes a different approach: it strips the process down to a few understandable steps. That makes it less precise, but often more transparent. You can see exactly how the estimate is formed, which is valuable for learning and for quick everyday planning.
Frequently Asked Questions About Daily Prayer Time Estimates
How accurate is this daily prayer time calculator?
It is only as accurate as the simplified rule set shown on the page. It consistently applies sunrise, sunset, a daylight midpoint, and fixed 90-minute offsets, so it is useful for planning and learning but not as an authoritative prayer timetable. For observance, check a trusted local timetable or app.
Which prayers does it estimate?
It estimates the five obligatory daily prayers: Fajr, Dhuhr, Asr, Maghrib, and Isha.
Why might a mosque timetable differ from this result?
A mosque timetable may use twilight angles for Fajr and Isha, true solar noon for Dhuhr, and a shadow-based rule for Asr. It may also include local adjustments or a particular jurisprudential method, all of which can move the times away from this simplified estimate.
Does the calculator handle daylight saving time automatically?
No. Enter the sunrise and sunset times exactly as they appear on your local clock for the date you are using.
Can I use this daily prayer time calculator while traveling?
Yes. It can be helpful when you need a quick schedule on the road. Just remember that it is an approximation and should be verified with a reliable local source whenever possible.
For further planning, you may also be interested in the Rosary Prayer Cycle Planner and the Intermittent Fasting Planner.
Optional mini-game: Prayer Window Rush for Daily Prayer Times
This optional mini-game turns the same simplified prayer-time model into a fast timing challenge. The glowing ring is a 24-hour clock, and each prayer window sits where the calculator places it. If you enter sunrise and sunset first, the game uses your day shape; if you leave the form blank, it loads a balanced sample day. That means the play loop is directly tied to the calculator instead of acting like a generic extra. Longer daylight stretches move Dhuhr farther from sunrise, Maghrib locks to sunset, and the fixed 90-minute offsets keep Fajr and Isha near the edges of the day.
Your goal is simple: tap, click, or press the space bar when the moving time beam crosses a highlighted prayer window. Clean hits build streaks and score bonuses. Misses break the combo. As the round continues, the windows tighten and the day pattern begins to swing between calmer and more extreme daylight shapes, so you learn the spacing by feel rather than by memorizing a list. The game never changes the calculator result below it. It is just a playful way to internalize what the midpoint-and-offset method is doing.
The game is completely optional and separate from the main result. It is best used as a quick visual drill for how sunrise, daylight length, and sunset shape the estimated schedule.