Islamic Calendar Tools
Islamic Calendar — Hijri Year Planner & Key Dates
Generate a full Islamic calendar for any Hijri year — all 12 months mapped to their Gregorian date ranges, with Ramadan, Eid al-Fitr, Eid al-Adha, and every other major Islamic date calculated instantly.
🌙 Runs entirely in your browser — no sign‑up, nothing sent to a server
Today’s Hijri date is —.
Click a segment to view that Hijri month
Press “Generate Calendar” to build the calendar for a Hijri year.
Understanding The Tool
What Is an Islamic Calendar?
An Islamic calendar (also called the Hijri calendar) is the lunar calendar used to date religious observances across the Muslim world. Unlike the Gregorian calendar, its twelve months follow the moon’s cycle, so each Hijri year runs about 10-12 days shorter than a Gregorian year — which is exactly why this tool recalculates the Gregorian dates for every month, every time you generate a new Hijri year.
This particular calendar uses a local, deterministic tabular algorithm based on Julian Day Numbers, so the full year — and every key Islamic date inside it — is generated instantly in your browser with no external date service involved.
Under The Hood
How This Islamic Calendar Works
- Enter a Hijri year. Type any AH year, or press “Use this year” to jump straight to the current Hijri year.
- Each month’s length is calculated. The tool works out exactly where every one of the 12 Hijri months starts and ends using a Julian Day Number bridge.
- Every month is converted to its Gregorian range. Each Hijri month is mapped onto the corresponding Gregorian start and end date.
- Key Islamic dates are located automatically. Ramadan, the two Eids, Ashura, the Day of Arafah, and more are placed into their correct month.
- Results appear instantly. Click any wedge on the calendar wheel to open that month, or copy, print, or download the full year.
- Covers all 12 Hijri months for any year, not just the current one
- Shows the Gregorian start and end date for every month
- Automatically locates the major Islamic dates inside the year
- Runs a deterministic, local calculation — no external API dependency
- Lets you copy, print, or download the full generated calendar
- Is keyboard-accessible and usable on mobile
Quality Checklist
What Should a Reliable Hijri Calendar Include?
A reliable calendar should do more than list twelve month names. At minimum, it should show the Gregorian date range for each Hijri month, surface the year’s major religious dates without you having to look them up separately, and give you a result you can actually use — copy it, print it, or save it for later.
See It In Action
Worked Example
Here’s what this tool returns for the year 1447 AH:
| Field | Value |
|---|---|
| Hijri year entered | 1447 AH |
| Ramadan begins | ≈ 18 February 2026 |
| Eid al-Fitr | ≈ 20 March 2026 |
| Eid al-Adha | ≈ 27 May 2026 |
| Calculation method | Local tabular (Julian Day Number) algorithm |
Who Uses This
Who This Islamic Calendar Is Built For
Worship & Fasting Planning
See the whole Hijri year at a glance so you can plan around Ramadan, the two Eids, and other observances well in advance.
Mosques & Community Organizers
Build a printable, month-by-month Hijri calendar to post or share with a congregation or community group.
Genealogy & Historical Research
Work out which Gregorian months a historical Hijri year actually spanned when studying old records.
Travel & Event Planning
Check well ahead of time which Gregorian weeks the Hajj season or a specific Islamic month will fall in.
Getting Accurate Results
Best Practices When Using a Hijri Calendar
- Treat the generated dates as a reliable planning estimate, not a religious ruling
- Remember tabular calculators can differ by a day from moon-sighting-based local announcements
- For fasting or Eid dates specifically, confirm with your local mosque or authority when precision matters
- Re-generate the calendar each year rather than reusing last year’s month ranges
For background on how civil Hijri calendars are calculated and standardized, see the Umm al-Qura calendar reference on Wikipedia.
Avoid These
Common Mistakes When Reading an Islamic Calendar
- Assuming Hijri months always land on the same Gregorian dates every year — they shift earlier each year
- Confusing the Hijri year number (AH) with the Gregorian year
- Expecting a tabular Islamic calendar to always match a moon-sighting announcement exactly
- Forgetting that Hijri month length alternates and isn’t fixed like Gregorian months
Questions
Frequently Asked Questions
How accurate is this Hijri calendar?
This tool uses a tabular (arithmetic) calculation, which is highly consistent and reproducible but can occasionally differ by a day from dates set by actual moon sighting in a given country or region.
Can I generate a calendar for a future or past Hijri year?
Yes. Enter any Hijri year between 1 and 1600 AH and this tool will generate that year’s full 12-month layout and key dates.
Does this tool require an internet connection?
No. Once the page has loaded, it runs entirely in your browser and doesn’t send your chosen year to any server.
Why do Ramadan and Eid dates shift earlier every Gregorian year?
The Hijri calendar is lunar and its year is about 10-12 days shorter than the Gregorian solar year, so every Hijri month — including Ramadan and the Eids — drifts earlier against the Gregorian calendar each year.
Can I use this calendar for official or religious rulings?
Treat results from this tool as a fast planning reference. For religious rulings such as the start of Ramadan or Eid, confirm with your local mosque or Islamic authority.
Keep Exploring
Related Reading
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