This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
Calendar Package Guide
Calendar Package
 
DayOfWeek day of the week for a given date
DaysPlus add a number of days to a given date
DaysBetween number of days between two dates
CalendarChange convert a date from one calendar to another
    
EasterSunday date of Easter Sunday for a given year
EasterSundayGreekOrthodox Easter Sunday according to the Greek Orthodox Church
JewishNewYear date of the Jewish New Year
    
DateQ whether a date is valid in the current calendar system
    
Sunday  ▪ Monday  ▪ Tuesday  ▪ Wednesday  ▪ Thursday  ▪ Friday  ▪ Saturday
    
Calendars
Gregorian  ▪ Julian  ▪ Islamic  ▪ Jewish
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