Question 1

What does Islamic Calendar API do?

Accepted Answer

Islamic Calendar API by Aladhan provides comprehensive tools for converting between Gregorian and Hijri Islamic dates, retrieving accurate Islamic prayer times for any location worldwide, and building Muslim-focused applications that respect the lunar-based Islamic calendar system. The Aladhan API is one of the most widely used free Islamic APIs globally, supporting mosques, Muslim lifestyle apps, Islamic school platforms, and prayer reminder applications across the world, including Nigeria which has a Muslim population exceeding 90 million people across its northern states and throughout the country.

The Hijri calendar conversion endpoints allow converting any Gregorian date to its Hijri equivalent and vice versa, supporting the calculation of Islamic dates for any year past or future. Nigerian Muslim app developers can use this conversion to display dual-calendar interfaces in apps — showing both the standard Gregorian date and the corresponding Hijri date simultaneously. This is particularly important for Nigerian Muslims observing Islamic events like Ramadan, Eid al-Fitr, Eid al-Adha, Mawlid al-Nabi, and the Islamic New Year, all of which are determined by the Hijri calendar.

Prayer times are calculated for any location by providing latitude and longitude coordinates (or a city name) along with the desired calculation method. Multiple calculation methods are supported including the Muslim World League method, Egyptian General Authority of Survey method, University of Islamic Sciences Karachi method, Umm Al-Qura University Makkah method, and others — allowing Nigerian Muslim communities to use whichever method their religious authority follows. Nigerian mosques in cities like Kano, Kaduna, Sokoto, Maiduguri, and Lagos can build prayer time boards or digital displays powered by the Aladhan API.

Specific Islamic dates and special calendar events are accessible through the API, including the dates of Ramadan for any year, the Islamic New Year (1st Muharram), and other significant months in the Islamic year. For Nigerian Islamic calendar app developers building annual event planners for Muslim communities, the ability to programmatically retrieve accurate Islamic dates for upcoming years allows generating multi-year Islamic event calendars without manual date calculation.

The Qibla direction endpoint calculates the direction of Mecca (Qibla) from any geographic coordinates, returning the compass bearing in degrees. Nigerian Muslim app developers building mosque finder or prayer direction apps can integrate Qibla direction calculation to help Muslims identify the correct prayer direction from their current location anywhere in Nigeria, whether in the northern states near Niger and Chad or the southern coastal regions.

Special Islamic dates endpoint provides dates for Laylat al-Qadr (the Night of Power during Ramadan) and other significant nights, supporting Nigerian Islamic apps that send notifications or provide special content for these important spiritual occasions. Prayer notification apps serving Nigerian Muslims can use these dates to configure automated reminders for these nights.

The Aladhan API is entirely free with no authentication required, making it immediately accessible for Nigerian Muslim app developers, mosque management software developers, and Islamic school platform builders. The API handles millions of requests monthly and has proven reliable at scale, making it suitable for production applications serving large Nigerian Muslim user bases. Nigerian Muslim community developers can call the Aladhan API endpoints without any API key by default, with optional registration for higher request volumes.

Question 2

How much does Islamic Calendar API cost?

Accepted Answer

Islamic Calendar API is free to use. Completely free API

Question 3

How do I authenticate with the Islamic Calendar API API?

Accepted Answer

None

Question 4

Is there a rate limit on Islamic Calendar API?

Accepted Answer

Unlimited

Question 5

Does Islamic Calendar API offer a sandbox or test mode?

Accepted Answer

No public sandbox is documented for Islamic Calendar API. Check the official docs for the recommended way to test integrations safely before going live.

Question 6

What is Islamic Calendar API best suited for?

Accepted Answer

Islamic calendar, prayer times, Ramadan schedule, Hijri dates

Question 7

Is there anything else I should know before integrating Islamic Calendar API?

Accepted Answer

Part of the Aladhan API suite (same provider as Prayer Times API, ID 812). Covers Hijri date conversions and Islamic holiday listings. Highly relevant for Nigeria's large Muslim population.

Question 8

Where can I find Islamic Calendar API's documentation?

Accepted Answer

The official API documentation is at https://aladhan.com/islamic-calendar-api. The provider's website is https://aladhan.com.

Question 9

Does Islamic Calendar API support Nigerian developers?

Accepted Answer

Yes — Islamic Calendar API explicitly supports Nigerian developers/use cases.

Islamic Calendar API

Features Included

Not Supported

Key Highlights

Required Access Documents

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