Why Do We Have Leap Years? - An Explanation of the Leap Day and the Julian/Gregorian Calendars
How Was The Calendar Invented?
The Jewish Calendar, Explained
New calendar could revolutionize the way we live
God's Calendar Vs. Man's Calendar
Julian Calendar
Julian or Gregorian Calendar?
What does Julian date mean?
leap years don't happen every four years
Leap Year Explained Knowledge in Brain's Calendar Insights
How To Set The Day, Date, & Leap Year On A Seiko Perpetual Calendar
അധിവർഷവും കലണ്ടറിന്റെ ചരിത്രവും | What is Leap Year? History of Calendars | Gregorian Calendar
Converting Julian days into date and time in excel
Why Do Some Countries Use Different Calendars?
Ethiopian Calendar Explained: Why Ethiopia is 7 Years Behind #Ethiopiancalendar #Ethiopianhistory
Complete method: how to find the week-day for any date?
The Hebrew Calendar (Documentary)
Why Do We Have LEAP YEARS? | What Is A LEAP YEAR? | The Dr Binocs Show | Peekaboo Kidz
Calendars Around the World
Mathematics behind Leap Year Calculation | History of Leap Years | September 1752 | SuMyPyLab