Calculate Prayer Times

Calculate Prayer Times

Enter your location details and date to get accurate prayer times.

Enter latitude in decimal degrees (e.g., 33.6844 for Islamabad). Positive for North, negative for South.

What is a Prayer Times Calculator?

A prayer times calculator is a tool used to determine the timings of the five daily Islamic prayers (Salah): Fajr, Dhuhr, Asr, Maghrib, and Isha, plus Sunrise. These times are determined by the position of the sun relative to a specific location on Earth. To calculate prayer times accurately, one needs the latitude and longitude of the location, the date, and the timezone, along with a chosen calculation method that specifies the solar angles for Fajr and Isha, and the method for Asr.

Muslims around the world use these calculators to ensure they perform their prayers at the correct times, which vary daily and by location. Modern tools often use precise astronomical formulas to calculate prayer times, offering greater accuracy than traditional methods that relied purely on observation.

Who Should Use It?

Anyone who needs to know the exact prayer times for their location should use a prayer times calculator. This includes individuals at home, travelers, and communities in mosques. It’s especially useful in areas far from mosques where the Adhan (call to prayer) might not be audible, or in high-latitude regions where twilight phenomena are different.

Common Misconceptions

One common misconception is that prayer times are the same every day or only change slightly. In reality, they change daily due to the Earth’s tilt and orbit around the sun. Another is that there’s only one “correct” set of prayer times; different calculation methods and juristic opinions (especially for Asr, Fajr, and Isha) result in slight variations, all of which can be valid depending on the followed school of thought or convention.

Prayer Times Formula and Mathematical Explanation

The calculation of prayer times is based on spherical astronomy, specifically the position of the sun in the sky. The Earth’s rotation and orbit cause the sun’s apparent position to change throughout the day and year.

Key steps to calculate prayer times include:

1. Julian Date: Convert the Gregorian date to a Julian Date, which is a continuous count of days.
2. Sun’s Position: Calculate the sun’s ecliptic longitude, obliquity of the ecliptic, right ascension, and declination for the given Julian Date.
3. Equation of Time: Determine the Equation of Time (EoT), which is the difference between apparent solar time and mean solar time.
4. Midday (Dhuhr): Calculate the time of solar noon (when the sun is at its highest point). This is the basis for Dhuhr time, usually a few minutes after solar noon.
   `Midday = 12 – Longitude/15 – EoT/60 + Timezone`
5. Hour Angle: For Fajr, Sunrise, Asr, Maghrib (Sunset), and Isha, calculate the hour angle (H) of the sun for the required solar depression angle (α) below the horizon using the formula:
   `cos(H) = (sin(α) – sin(Latitude) * sin(Declination)) / (cos(Latitude) * cos(Declination))`
6. Prayer Times: Convert the hour angle to hours and add/subtract from midday time to get the respective prayer times. For example, `Fajr = Midday – H(Fajr)/15`. Maghrib is typically at sunset (α ≈ -0.833°), Fajr and Isha are defined by specific angles below the horizon (e.g., 18°), and Asr is when the shadow length is a certain multiple of the object’s height.

Variables Table

Variable	Meaning	Unit	Typical Range
Latitude (φ)	Observer’s latitude	Degrees	-90 to +90
Longitude (λ)	Observer’s longitude	Degrees	-180 to +180
Date	Gregorian date	Date	N/A
Timezone (TZ)	Time offset from UTC	Hours	-12 to +14
Declination (δ)	Sun’s declination	Degrees	-23.45 to +23.45
EoT	Equation of Time	Minutes	-16 to +14
Fajr Angle	Solar depression angle for Fajr	Degrees	12 to 20
Isha Angle/Time	Solar depression angle or minutes after Maghrib for Isha	Degrees/Minutes	12 to 20 / 60 to 120
Asr Method	Shadow factor for Asr (1 or 2)	N/A	1 or 2

Variables used in prayer time calculations.

Practical Examples (Real-World Use Cases)

Example 1: Calculating Prayer Times for London

Let’s calculate prayer times for London on January 15, 2024.

• Latitude: 51.5074° N
• Longitude: 0.1278° W
• Date: 2024-01-15
• Timezone: 0 (UTC)
• Method: ISNA (Fajr 15°, Isha 15°)
• Asr: Standard

Using these inputs, the calculator would output times similar to: Fajr ~6:00 AM, Sunrise ~7:55 AM, Dhuhr ~12:10 PM, Asr ~2:30 PM, Maghrib ~4:25 PM, Isha ~6:20 PM (times are approximate for illustration).

Example 2: Calculating Prayer Times for Dubai during Ramadan

Let’s calculate prayer times for Dubai on March 20, 2024.

• Latitude: 25.2048° N
• Longitude: 55.2708° E
• Date: 2024-03-20
• Timezone: +4 (UTC+4)
• Method: MWL (Fajr 18°, Isha 17°)
• Asr: Standard

The calculator would give times like: Fajr ~5:00 AM, Sunrise ~6:20 AM, Dhuhr ~12:25 PM, Asr ~3:55 PM, Maghrib ~6:30 PM, Isha ~7:50 PM. These times are crucial for fasting during Ramadan. Check out our Ramadan Timetable for more details.

How to Use This Prayer Times Calculator

1. Enter Location: Input the Latitude and Longitude of your location in decimal degrees.
2. Select Date: Choose the date for which you need the prayer times.
3. Set Timezone: Enter your local timezone offset from UTC.
4. Choose Method: Select a calculation method from the dropdown. Common methods like ISNA, MWL, etc., are available. If you choose “Custom,” you can specify Fajr and Isha angles/time.
5. Select Asr Method: Choose between Standard (Shafii, Maliki, Hanbali) or Hanafi for Asr calculation.
6. Calculate: Click the “Calculate Times” button.
7. View Results: The calculator will display Fajr, Sunrise, Dhuhr, Asr, Maghrib, and Isha times, along with some intermediate astronomical values. The results will also be shown in a table and a chart visualizing intervals.

Use these times to plan your daily prayers. For Qibla direction, use our related tool.

Key Factors That Affect Prayer Times Results

1. Latitude: Your north-south position greatly affects the times, especially Fajr and Isha at high latitudes.
2. Longitude: Your east-west position determines the local solar noon and thus all prayer times relative to UTC.
3. Date: The time of year changes the sun’s declination, altering the length of the day and prayer intervals.
4. Timezone: This converts the UTC-based calculations to your local time. Incorrect timezone leads to incorrect local times.
5. Calculation Method (Fajr/Isha Angles): Different organizations use different angles for Fajr and Isha, leading to variations of several minutes. Some methods also use fixed minutes for Isha after Maghrib. Using a daily prayer calculator with the right method is important.
6. Asr Juristic Method: The Hanafi school calculates Asr later than others, based on a longer shadow length.
7. Altitude: Higher altitudes can slightly affect sunrise and sunset times, though most calculators assume sea level.
8. Atmospheric Refraction: The bending of light by the atmosphere affects observed sunrise and sunset; standard algorithms include an average correction.

Frequently Asked Questions (FAQ)

1. Why are there different prayer time calculation methods?

Different methods use different angles for the sun’s depression below the horizon to define Fajr (dawn) and Isha (nightfall), and sometimes how Asr is calculated. These reflect varying interpretations and observations by different scholars and organizations.

2. Which calculation method should I use?

It’s generally recommended to use the method followed by your local mosque or community. If unsure, ISNA and MWL are widely used.

3. How accurate is this prayer times calculator?

It uses standard astronomical formulas and is very accurate for the given inputs and method. However, local conditions or specific observational preferences might lead to slight differences from local mosque times.

4. Can I get prayer times for any location in the world?

Yes, as long as you provide the correct latitude, longitude, date, and timezone, you can calculate prayer times for almost any location. High latitudes (above 60°) may have periods where some prayers are not conventionally definable by solar angles.

5. What about high latitudes where the sun doesn’t set or rise for long periods?

At very high latitudes, during certain times of the year, twilight may persist all night, or the sun may not set/rise. Special conventions (like ” أقرب وقت” – nearest time, or ” نصف الليل” – midnight) are used in such cases, which this calculator might handle based on the underlying algorithm, but it’s an area of complex fiqh.

6. Does this calculator account for Daylight Saving Time (DST)?

You need to adjust the timezone input to reflect DST if it’s active in your region. For example, if your base timezone is UTC-5 and DST is active, you might be at UTC-4.

7. How is Asr time calculated?

Asr time is calculated based on the length of an object’s shadow. The “Standard” method (Shafii, Maliki, Hanbali) sets Asr when the shadow length is equal to the object’s height plus the shadow length at noon. The “Hanafi” method sets it when the shadow length is twice the object’s height plus the shadow length at noon.

8. What if I don’t know my exact latitude and longitude?

You can easily find your latitude and longitude using online map services or GPS on your phone. Search for your city or address online to get its coordinates.