World Calendars
Rumi calendar date today
The Rumi calendar was the official solar calendar of the late Ottoman Empire and early Republic of Turkey. It used the Julian months, later the Gregorian ones, but counted its years from the Hijra, so its year numbers run 584 years behind.
11 Teşrin-i Sânî 1442
١١ تشرین ثانی ١٤٤٢
Not official since 1926; the last rule, continued
- In the Gregorian calendar
- Wednesday 11 November 2026
- This day began
- At midnight, as Wednesday 11 November 2026 begins
- This day ends
- At midnight, as Thursday 12 November 2026 begins
- Year 1442 began
- Thursday 1 January 2026
- Next new year
- Friday 1 January 2027 (in 51 days)
- This year has
- 365 days in 12 months
- Adopted
- 13 March 1840, 1 Mart 1256, under the Tanzimat reforms
- Who used it
- The Ottoman state for civil and financial matters, then Turkey until the end of 1925
- How it works
- Julian months and leap years until February 1917, Gregorian months after that
- Years count from
- The Hijra of 622 - the year number is the Western year minus 584
- Unusual detail
- Year 1333 had only ten months, from 1 March to 31 December 1917
How the Rumi calendar works
The Rumi calendar has the same twelve months and month lengths as the Julian and Gregorian calendars, under Ottoman names such as Mart, Nisan and Teşrin-i Evvel. Until 1917 the year began on 1 Mart, and the dates followed the Julian calendar, so 1 Mart fell on 13 March in the 1800s and on 14 March in the 1900s.
In 1917 the calendar was moved onto the Gregorian reckoning: the day after 15 Şubat 1332 became 1 Mart 1333, which was 1 March 1917. From 1918 the year began on 1 Kânûn-ı Sânî, the same day as 1 January, and day and month matched the Gregorian date.
| No. | Month | Days |
|---|---|---|
| 1 | Mart (March) | 31 |
| 2 | Nisan (April) | 30 |
| 3 | Mayıs (May) | 31 |
| 4 | Haziran (June) | 30 |
| 5 | Temmuz (July) | 31 |
| 6 | Ağustos (August) | 31 |
| 7 | Eylül (September) | 30 |
| 8 | Teşrin-i Evvel (October) | 31 |
| 9 | Teşrin-i Sânî (November) | 30 |
| 10 | Kânûn-ı Evvel (December) | 31 |
| 11 | Kânûn-ı Sânî (January) | 31 |
| 12 | Şubat (February) | 28 or 29 |
The table shows the pre-1917 fiscal order, starting in March. From 1918 the year began with Kânûn-ı Sânî.
Variants and the method used here
We follow the official rules. From 13 March 1840 to 28 February 1917 we take the Julian date and subtract 584 from the year, or 585 in Kânûn-ı Sânî and Şubat, because the year began on 1 Mart. From 1 March 1917 to 31 December 1925 we use the Gregorian day and month with the year minus 584.
The calendar stopped being official on 1 January 1926. For later dates, including today, we continue the last official rule and show the date it would give if that rule still applied. These dates are a continuation of the rule, not official dates, and are marked as unofficial. Dates before 13 March 1840 are shown as before the calendar was adopted.
A short history
An Ottoman fiscal calendar based on the solar year was started by a decree of Sultan Mehmed IV in 1677, and in 1740 March was made the first month of the fiscal year. On 13 March 1840, during the Tanzimat reforms, the Julian calendar was adopted for all civil matters as the Rumi calendar, with 1 Mart 1256 as its first day.
A law of 8 Şubat 1332 moved the calendar to the Gregorian reckoning in 1917 by dropping 13 days. The Republic of Turkey kept the Rumi year numbers until Law No. 698 of 26 Kânunuevvel 1341, which made the day after 31 Kânunuevvel 1341 into 1 January 1926.
Sources
How this site calculates the date: Official Ottoman rules: Julian day and month with year minus 584 (585 in January and February) from 13 March 1840; Gregorian day and month with year minus 584 from 1 March 1917. Abolished on 1 January 1926; later dates continue the last rule.