linguistic:paraphrasing
Replacement by the Gregorian calendar

The Julian calendar has been replaced as the civil calendar by the Gregorian calendar in all countries which officially used it. Turkey switched (for fiscal purposes) on 16 February/1 March 1917. Russia changed on 1/14 February 1918. Greece made the change for civil purposes on 16 February/1 March 1923, but the national day (25 March) was to remain on the old calendar. Most Christian denominations in the west and areas evangelised by western churches have made the change to Gregorian for their liturgical calendars to align with the civil calendar.

A calendar similar to the Julian one, the Alexandrian calendar, is the basis for the Ethiopian calendar, which is still the civil calendar of Ethiopia. Egypt converted from the Alexandrian calendar to Gregorian on 1 Thaut 1592/11 September 1875.

During the changeover between calendars and for some time afterwards, dual dating was used in documents and gave the date according to both systems. In contemporary as well as modern texts that describe events during the period of change, it is customary to clarify to which calendar a given date refers by using an O.S. or N.S. suffix (denoting Old Style, Julian or New Style, Gregorian).