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Ubify Financial Advisory Board
FINANCIAL ANALYSTS & CPA REVIEWERS
About This Tool
Calculating Islamic prayer times (Salah) relies on astronomical solar equations based on the sun's altitude relative to the horizon. Fajr begins at astronomical twilight dawn, Sunrise marks the end of Fajr, Dhuhr occurs when the sun crosses the meridian at solar noon, Asr begins when an object's shadow length equals its midday shadow plus height, Maghrib begins at sunset, and Isha starts when evening twilight disappears.
This tool calculates solar declination and solar noon from your latitude, longitude, and local time offset. You can choose from standard international calculation conventions: Karachi (University of Islamic Sciences, 18° Fajr / 18° Isha), Muslim World League (18° / 17°), ISNA (15° / 15°), Umm al-Qura (Makkah, 18.5° Fajr / 90 min fixed Isha), or the Egyptian General Authority of Survey (19.5° / 17.5°). For example, entering coordinates for Karachi (24.86° N, 67.00° E) computes exact solar noon and corresponding prayer timestamps in local standard time. All mathematical calculations execute locally in client-side JavaScript without third-party network APIs.
How to Use
- 1
Enter your local latitude and longitude coordinates into the location fields.
- 2
Select your calculation convention (Karachi, Muslim World League, ISNA, Umm al-Qura, or Egyptian Authority).
- 3
Review the generated daily prayer schedule for Fajr, Sunrise, Dhuhr, Asr, Maghrib, and Isha.
- 4
Check the highlighted current interval to track the upcoming prayer time.
Frequently Asked Questions
How does the calculator determine daily prayer times?
It applies solar declination and hour-angle formulas to your geographic coordinates, calculating when the sun reaches specific angles below or above the horizon for each prayer.
What differences exist between calculation conventions?
Conventions differ primarily in the solar twilight depression angles used for Fajr and Isha, reflecting regional latitude characteristics and juristic rulings.
Are my location coordinates sent to an external server?
No. All coordinate math and timetable evaluations execute entirely in your local browser session.