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FAQs Related to Hijri Calendar
The Hijri Calendar, also known as the Islamic or Lunar calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to determine the dates of Islamic holidays and rituals, such as the annual fasting (Ramadan) and the Hajj pilgrimage. Unlike the Gregorian calendar, which is a solar calendar and has 365 or 366 days in a year, the Hijri calendar is approximately 11 days shorter each year, causing Islamic dates to shift earlier in the Gregorian calendar year[citation:9].
The Hijri calendar consists of 12 months in the following order[citation:9]:
- ✅ 1. Muharram – The sacred month
- ✅ 2. Safar
- ✅ 3. Rabi al-awwal – The birth month of the Prophet Muhammad
- ✅ 4. Rabi al-Thani
- ✅ 5. Jumada al-awwal
- ✅ 6. Jumada al-Thani
- ✅ 7. Rajab – The sacred month
- ✅ 8. Shaban
- ✅ 9. Ramadan – The month of fasting
- ✅ 10. Shawwal – The month of Eid al-Fitr
- ✅ 11. Dhul Qadah – The sacred month
- ✅ 12. Dhul Hijjah – The month of Hajj and Eid al-Adha
Four of these months are considered sacred: Muharram, Rajab, Dhul Qadah, and Dhul Hijjah[citation:9].
The Hijri calendar is based on the lunar cycle. Each month begins with the sighting of the new moon (Ru'yatul Hilal). Because the lunar cycle is approximately 29.5 days, each month alternates between 29 and 30 days[citation:9]. The beginning of each month is contingent on the visibility of the moon at the end of the previous month, which depends on various factors such as weather. Therefore, the Islamic calendar provides only a tentative overview of upcoming Islamic dates[citation:9].
The Hijri era began with the Islamic New Year in 622 CE, commemorating the migration (Hijrah) of Prophet Muhammad from Mecca to Medina[citation:9].
Our Hijri Calendar display includes easy navigation:
- ✅ Previous Month: Click the arrow button to go to the previous month
- ✅ Next Month: Click the arrow button to go to the next month
- ✅ Current Month: Click the "Today" button to return to the current month
- ✅ Keyboard navigation: Use the left/right arrow keys for quick navigation (where supported)
The Hijri Calendar display uses the Umm al-Qura calendar calculation, which is the official calendar of Saudi Arabia and widely used in the Islamic world[citation:11]. For Muslim holidays and religious observances, the final determination of dates often depends on local moon sighting announcements. We recommend checking with your local mosque or religious authority for the exact start dates of Ramadan, Eid, and other Islamic events[citation:9].
Yes. The Hijri Calendar display shows both Gregorian and Hijri dates side by side for the entire month[citation:1]. This allows you to see corresponding dates in both calendars instantly. This is useful for:
- ✅ Planning: Schedule events or deadlines across calendars
- ✅ Tracking: Know exactly when Islamic holidays occur in the Gregorian calendar
- ✅ Commemoration: Track personal dates like birthdays in both calendars
The Hijri Calendar highlights important Islamic days and events[citation:9], including:
- ✅ Islamic New Year – 1st Muharram
- ✅ Day of Ashura – 10th Muharram
- ✅ Mawlid al-Nabi – 12th Rabi al-awwal (birth of Prophet Muhammad)
- ✅ Laylat al-Miraj – 27th Rajab
- ✅ Laylat al-Bara'at – 15th Shaban
- ✅ Ramadan – The month of fasting
- ✅ Laylat al-Qadr – The Night of Power (last 10 nights of Ramadan)
- ✅ Eid al-Fitr – 1st Shawwal
- ✅ Day of Arafah – 9th Dhul Hijjah
- ✅ Eid al-Adha – 10th–13th Dhul Hijjah
The Hijri calendar is a lunar calendar with 354 or 355 days in a year, while the Gregorian calendar is a solar calendar with 365 or 366 days[citation:9]. This 11-day difference causes Islamic months to shift earlier in the Gregorian calendar each year. For example, Ramadan will begin approximately 11 days earlier each Gregorian year[citation:9].
Yes. All calculations are performed locally in your browser. No data is sent to any server or stored anywhere. Your calendar preferences and dates remain completely private.
Yes. The Hijri Calendar is fully responsive and works on all devices with a web browser, including smartphones, tablets, and computers. The interface automatically adapts to your screen size for optimal usability.
Yes. The Hijri Calendar supports different regional adjustments for Hijri dates[citation:7]. For example, there are variations between the Global configuration and India configuration. This allows the calendar to cater to users in different regions where the moon sighting may differ by a day. The Umm al-Qura calendar is used as the primary reference for accurate conversion[citation:11].
Yes. The Hijri Calendar on Royal Calc is completely free to use. No registration or payment is required. All calculations are performed directly in your browser, ensuring your data remains private and secure.