Julian Date Leap Year Calendar. Leap years and the Julian calendar which eventually led to the Gregorian calendar, were introduced by Julius Caesar. Calendar date to Julian date Julian date to Calendar date.
Notes space available on a portrait format. Why longer years are called leap years. A full year at a glance calendar template in vertical design format.
The "leap" refers to the effect that leap days have on particular dates.
This was determined because it is a time period long enough to include all of recorded history and includes some time in the future that would incorporate the three important calendrical cycles, the Golden.
Compound methods are provided, as Return true if the year of dt is a leap year. The Julian calendar's formula to calculate leap years produced a leap year every four years. Julian days is the counter, each day incremented by one.