11 Rabi al Thani 2026: Date, Day & Islamic Calendar

11 Rabi al-Thani 2026 falls on Tuesday, September 22, 2026, according to the Umm al-Qura calendar used in Saudi Arabia. This date is written as 11 Rabi al-Thani 1448 AH, since Rabi al-Thani is the fourth month of the Islamic Hijri calendar.

As the founder of Muslim Planner, I get asked about this exact date almost every month by families trying to organize their Rabi al-Thani 2026 calendar. Here is the honest answer.

The Gregorian date can shift by a day, sometimes two, depending on your local moon sighting and which calendar method your community follows. Let me walk you through it, step by step.

11 Rabi al-Thani 1448 AH corresponds to Tuesday, September 22, 2026, based on the Umm al-Qura calendar. Rabi al-Thani is the fourth month of the Islamic lunar calendar.

Because Hijri dates depend on moon sighting, some communities may observe this day one day earlier or later. Always confirm with your local mosque.

Detail	Information
Hijri date	11 Rabi al-Thani 1448
Gregorian date (Umm al-Qura)	Tuesday, September 22, 2026
Islamic year	1448 AH
Month position	4th month of the Hijri calendar
Date may vary	Yes, by moon sighting and calendar method

When Is 11 Rabi al Thani 2026?

11 Rabi al Thani 2026 falls in the fourth Hijri month of 1448 AH, and on the Umm al-Qura calendar it equals Tuesday, September 22, 2026.

Every year, Muslims ask the same question. When does this Hijri date land on the regular calendar? The Islamic calendar is lunar, so its months move backward through the Gregorian year by about ten or eleven days annually.

That is why 11 Rabi al-Thani lands in September this year, but it will land in a different month in the years around it.

Based on the Umm al-Qura calendar, Rabi al-Thani 1448 begins on September 12, 2026. Counting forward, 11 Rabi al-Thani lands on September 22, 2026.

Some calendars built on regional moon sighting, rather than astronomical calculation, may show the month starting a day or two later. In that case, the 11th shifts forward too.

I tell my Muslim Planner customers the same thing every time. Treat the calculated date as a strong estimate, then confirm it against your local mosque announcement before you lock in any plans.

Information	Date / Detail
Hijri date	11 Rabi al-Thani 1448
Gregorian year	2026
Islamic month	Rabi al-Thani
Month number	4th
Calendar type	Hijri lunar calendar

What Day Is 11 Rabi al-Thani?

On the Umm al-Qura calendar, 11 Rabi al-Thani 2026 falls on a Tuesday.

If you are checking your planner for the 11th, mark it as a Tuesday. That is the weekday tied to September 22, 2026, the Gregorian date most widely used for Islamic dates today.

Here is something worth remembering. If your community follows local moon sighting instead of calculation, your Hijri date might begin a day later.

In that case, 11 Rabi al-Thani could land on Wednesday instead. This is not a mistake on anyone's part. It simply reflects how the lunar calendar works. Always check your local source before you finalize an event on this date.

Where Does Rabi al-Thani Fall in the Islamic Calendar?

Rabi al-Thani is the fourth month of the Islamic calendar, coming right after Rabi al-Awwal and before Jumada al-Awwal.

The Hijri calendar has twelve lunar months, and each one carries its own place and rhythm. Rabi al-Thani sits fourth in that order.

• Muharram
• Safar

Rabi al-Awwal (see our Rabi al-Awwal guide)

• Rabi al-Thani
• Jumada al-Awwal

I often explain this to customers who are new to tracking the Islamic calendar. Unlike the Gregorian calendar, Hijri months are not fixed at 30 or 31 days.

Each month runs 29 or 30 days, depending on the lunar cycle and, in many places, the actual sighting of the new moon.

That is part of why the same Hijri date lands on a different Gregorian date every single year, drifting backward by ten or eleven days annually.

Rabi al Thani 2026 Calendar: Where Does the 11th Fall?

Rabi al Thani 2026 spans mid-September to mid-October, and the 11th day falls near the start of that window, on September 22.

Rabi al-Thani 1448 begins around September 12, 2026, and closes around October 11, 2026, giving it a full 30 days on the Umm al-Qura calendar. That means the month bridges two Gregorian months, September and October, which is exactly why so many people search for the Islamic calendar for September 2026 around this time of year.

The 11th day sits near the beginning of that window. Here is a simple breakdown so you can see the whole month at a glance.

Hijri Date	Gregorian Date (2026, Umm al-Qura)
1 Rabi al-Thani	Saturday, September 12
5 Rabi al-Thani	Wednesday, September 16
11 Rabi al-Thani	Tuesday, September 22
15 Rabi al-Thani	Saturday, September 26
20 Rabi al-Thani	Thursday, October 1
30 Rabi al-Thani	Sunday, October 11

I recommend bookmarking a full Islamic calendar so you are not recalculating this every single year.

Is 11 Rabi al-Thani the Same Date Everywhere?

Not always. 11 Rabi al-Thani can fall a day apart in different countries because some follow astronomical calculations and others follow local moon sighting.

This trips up a lot of people, so let me be direct about it. The Hijri date does not start at midnight the way the Gregorian date does. It starts at sunset. That single detail explains most of the confusion I see.

A calendar built on astronomical calculation, like Umm al-Qura, shows Rabi al-Thani beginning on September 12. A community that waits for the physical sighting of the crescent moon might not confirm the new month until a day later. So while one masjid marks 11 Rabi al-Thani on September 22, another following local sighting might mark it on September 23. Neither is wrong. They are simply following different, valid methods.

What Is the Significance of 11 Rabi al Thani?

11 Rabi al Thani itself carries no universally established special religious observance, but it falls within a month worth using for steady, consistent worship.

I want to be honest with you here, the way I would be with a friend. 11 Rabi al-Thani does not carry one specific, universally agreed religious event the way some other Islamic dates do.

If you come across a claim tying it to a particular occasion, treat it carefully and check reliable Islamic sources before accepting it.

What this date is good for is simpler, and in my experience, more useful. It is a marker for consistency.

Allah reminds us in Surah Al-Asr that people are truly in loss except those who have faith, do good, and encourage one another toward truth and patience (Quran 103:1-3). 

The Prophet Muhammad, peace be upon him, also reminded us that health and free time are two blessings many people lose without realizing it, a narration recorded in Sahih al-Bukhari.

If a specific date is ever attached to a religious claim you are unsure about, it is worth checking reliable Islamic sources rather than repeating it without verification.

Every Hijri date, including this one, is a quiet invitation to use our time well. Even outside faith-based teaching, research on habit formation backs this up.

Small, consistent actions, tracked over time, compound into real change. I have watched this play out with hundreds of Muslim Planner customers, and it rarely looks dramatic. It looks like showing up, day after Hijri day.

How to Check 11 Rabi al Thani in Your Location

To confirm 11 Rabi al Thani in your city, check your local mosque, your country's Islamic authority, and whether they follow calculation or moon sighting.

Here is what I tell every Muslim Planner customer who asks me this question:

• Check your local mosque or Islamic center for their monthly announcement.
• Confirm whether your country follows calculation, like Umm al-Qura, or local moon sighting.
• Look up the Gregorian conversion before you commit to an important date.
• Remember that the Hijri day begins at sunset the evening before.
• If you are planning something significant, build in a one-day buffer just in case.

This small habit alone has saved many of my customers from scheduling conflicts around Ramadan and Hajj planning.

11 Rabi al-Thani 2026 in the Gregorian Calendar

11 Rabi al-Thani 1448 AH converts to September 22, 2026 on the Gregorian calendar, though the Islamic calendar shifts roughly ten to eleven days earlier each solar year.

Because the Hijri calendar is lunar and the Gregorian calendar is solar, the two never stay lined up. Each Islamic year is about ten to eleven days shorter than a Gregorian year.

That is why 11 Rabi al-Thani 1448 AH lands on September 22, 2026, but next year the same Hijri date will land closer to mid-September, and the year after that, even earlier.

If you convert dates often, treat any calendar or converter as an estimate first, and your local mosque confirmation as the final word.

FAQ:

When is 11 Rabi al Thani 2026?

11 Rabi al-Thani 2026 is expected to fall on Tuesday, September 22, based on the Umm al-Qura calendar. Local moon sighting may shift the date by a day.

What month is Rabi al-Thani?

Rabi al-Thani is the fourth month of the Islamic calendar, following Rabi al-Awwal and preceding Jumada al-Awwal.

Is Rabi al-Thani the same as Rabi al-Akhir?

Yes. Rabi al-Thani and Rabi al-Akhir are different names for the same fourth month of the Hijri calendar.

Can 11 Rabi al-Thani fall on different dates?

Yes. The date can vary depending on local moon sighting and the calendar method used.

How many days are in Rabi al-Thani?

Rabi al-Thani can have 29 or 30 days. In 1448 AH, it is expected to have 30 days.

Plan Your Islamic Calendar With Confidence

Check your Islamic dates and confirm them with your local mosque when needed. Use a Muslim Planner to organize your goals, family plans, and daily life around your deen.