Oau new calendar

You're referring to the "OAU" calendar!

The OAU calendar, also known as the "Ottoman Calendar" or "Rumi Calendar", is a lunisolar calendar used in Turkey and some other countries. It is based on the Islamic calendar, but with some modifications.

Here are some key features of the OAU calendar:

  1. Lunar cycle: The OAU calendar is based on the lunar cycle, with each month beginning on the day of the new moon.
  2. Solar year: The OAU calendar is also aligned with the solar year, with each year consisting of 12 or 13 months, depending on the lunar cycle.
  3. Months: The OAU calendar has 12 months, which are:
    • Muharram (30 days)
    • Safar (29 or 30 days)
    • Rabi' al-awwal (30 days)
    • Rabi' al-thani (29 or 30 days)
    • Jumada al-awwal (30 days)
    • Jumada al-thani (29 or 30 days)
    • Rajab (30 days)
    • Sha'ban (29 or 30 days)
    • Ramadan (29 or 30 days)
    • Shawwal (30 days)
    • Dhu al-Qadah (29 or 30 days)
    • Dhu al-Hijjah (30 days)
  4. Leap year: The OAU calendar has a leap year every 3 years, which adds an extra month to the calendar.
  5. Dates: The OAU calendar dates are usually written in the format "Day of the month, Month, Year", e.g. "15 Muharram 1444".

The OAU calendar is still used in some parts of Turkey, particularly in the eastern regions, and is also used by some Muslim communities around the world.