gives the number of days from date1 to date2.


gives the number of days of the specified daytype from date1 to date2.

Details and Options

  • Dates can be specified in the following forms:
  • DateObject[]date object
    {y,m,d}year, month, day
    {y,m}the first day of the specified month
    {y}the first day of the first month of the year y
    "string"date as a string ("Jan. 1, 2000")
  • Possible day types are: All (default), "Weekday", "Weekend", Monday through Sunday, "EndOfMonth", "BusinessDay", "BeginningOfMonth", and "Holiday".
  • DayCount excludes the beginning date of the date range.
  • DayCount takes the following options:
  • CalendarType"Gregorian"calendar in which the dates have been specified
    HolidayCalendar{"UnitedStates","Default"}holiday schedule and subspecification for the business day and holiday computations
  • In the Jewish calendar, the weekdays are Sunday through Thursday.


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Basic Examples  (4)

Print the number of days in a date range:

Print the number of days that fall on a given day of the week:

Print the number of business days in a date range:

Print all holidays in the current year, subject to the default holiday schedule:

Scope  (2)

Compute the average number of weekend days this century:

Compute the average number of non-weekend Swedish holidays this century:

Options  (3)

CalendarType  (1)

Count all US holidays that will occur in the current Islamic calendar year:

HolidayCalendar  (2)

Count holidays in India:

Different markets within a country may have different holiday schedules:

Applications  (1)

Compute the number of days until the next US presidential election (first Tuesday after the first Monday in November of leap years):

Properties & Relations  (2)

DayCount is equivalent to the length of the list output by DayRange for the same set of inputs:

Holidays, weekends, and business days always add up to the total number of days in the range:

Possible Issues  (2)

DayCount does not count the beginning date of the date range:

A date may only be a holiday if it is not a weekend:

Introduced in 2012
Updated in 2014