Календарь

Стыдно признаться, но я не знал по какому календарю живет весь мир, Юлианскому (Julian) или Грегорианскому (Gregorian). Помогло руководство по PHP! 😊

Цитата:

Remember, the current calendar system being used worldwide is the Gregorian calendar. gregoriantojd() can be used to convert such dates to their Julian Day count.

The Gregorian calendar was not instituted until October 15, 1582 (or October 5, 1582 in the Julian calendar). Some countries did not accept it until much later. For example, Britain converted in 1752, The USSR in 1918 and Greece in 1923. Most European countries used the Julian calendar prior to the Gregorian.

Так то вот.