Rumi Calendar

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Rumi Calendar, a calendar based on the Julian Calendar, used by the Ottoman Empire after Tanzimat. It was used for economic reasons and is a solar based calendar, assigning a date to each solar day.

Before that Ottomans were using the Islamic calendar, of which days are numbered within each lunar phase cycle. Because the length of the lunar month is not an even fraction of the length of the tropical year, a purely lunar calendar quickly drifts against the seasons. Thus, Ottoman Empire started to use the solar based, Rumi Calendar in 1850 for filing the taxes and governmental issues. It starts to count the years with the same event that also Islamic Calendar started: Hijra. In this calendar, March is the first month of the year. 2008 is the year 1424 in Rumi Calendar.

Rumî Calendar Months
Month	Fiscal year	Turkish	Ottoman	Days	Notes
1	11th month	Kânûn-ı Sânî	كانون الثاني	31	İkinci Kânûn
2	12th month	Şubat	شباط	28
3	1st month	Mart	مارس	31
4	2nd month	Nisan	نيسان	30
5	3rd month	Mayıs	مايو	31
6	4th month	Haziran	حزيران	30
7	5th month	Temmuz	تموز	31
8	6th month	Ağustos	أغسطس	31
9	7th month	Eylül	أيلول	30
10	8th month	Teşrin-i Evvel	تشرين الاول	31	Birinci Teşrin
11	9th month	Teşrin-i Sânî	تشرين الثاني	30	İkinci Teşrin
12	10th month	Kânûn-ı Evvel	كانون الاول	31	Birinci Kânûn