The ancestors of Ukrainians, Russian, Belarusian, Prussians, Etruscans and other peoples who settled long ago in Europe have several common calendar systems, is now in zabytyh.Dlya help, now…

Vremyaischisleniya system that existed in different nations, according to the doctor of historical sciences, professor R. Simonov — very interesting topic. However, the question of what was the…