This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
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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