The list of traditional Turkish units of measurement, a.k.a.
The Ottoman Empire (1299–1923), the predecessor of modern Turkey was one of the 17 signatories of the Metre Convention in 1875.
For 58 years both the international and the traditional units were in use, but after the proclamation of the Turkish Republic, the traditional units became obsolete.
Its era begins from the Hijra in 622 CE and each year is calculated using the 12 Arabian lunar months, approximately eleven days shorter than a Gregorian solar year.
The new calendar, which was called the Rumi also began by 622, but with an annual duration equal to a solar year after 1840.