Презентация на тему The Old New Year (Старый Новый год)

How do you celebrate new year holidays?
Do you know when the Old New Year is celebrated?

There are 365 days in a calendar year.
A solar year is actually 365, 2421999 days.
Because of this difference, every fourth year is a leap year with an extra day at the end of February.

How are these people related to the Old New Year?
Julius Caesar
The Roman Emperor
Pope Gregory XIII

The Roman emperor Julius Caesar introduced the Julian calendar in 45BC.
According to the calendar it has 365days with a leap year of 366 days.
The Julian calendar is not perfect because it falls behind the solar year by about one day per century.

In 1582, Pope Gregory XIII introduced the Gregorian calendar which corrects the Julian calendar by making most <00> years (1700, 1800, 1900) normal years of 365 days.
The Gregorian calendar omits century years which are not divisible by 400.

To correct this, the date jumped from 31st January 1918 to 14th February.
Happy Old New Year!
Russia began to use the Gregorian calendar on 26th January, 1918.
By this time, the Julian calendar was 13 days behind the solar year.

The Russian Orthodox Church still uses the Julian calendar.
Wish you lots of love, joy and happiness!