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DayMatchQ[date,daytype]

returns True if the date matches the daytype specification and returns False otherwise.

DayMatchQ[daytype]

represents an operator form of DayMatchQ that can be applied to a date.

Details and Options
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
Options  
CalendarType  
HolidayCalendar  
Applications  
Properties & Relations  
Possible Issues  
See Also
Related Guides
History
Cite this Page

DayMatchQ

DayMatchQ[date,daytype]

returns True if the date matches the daytype specification and returns False otherwise.

DayMatchQ[daytype]

represents an operator form of DayMatchQ that can be applied to a date.

Details and Options

  • A date 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}January 1 of the year y
    "string"date as a string ("Jan. 1, 2000")
    {y,m,d,h,m,s}precise time
    timeabsolute time specification
  • Possible day types are:
  • Allany calendar date (default)
    "Weekday"date considered a weekday
    "Weekend"date considered a weekend
    "Holiday" holiday according to HolidayCalendar
    "NonHoliday"date that is not a holiday
    "BusinessDay"non-holiday weekday
    "NonBusinessDay"holiday or weekend
    "WeekdayHoliday"holiday on a weekday
    "WeekendHoliday"holiday on a weekend
    "WeekendNonHoliday"non-holiday weekend
    Monday, Tuesday, …a specific day of the week
    "EndOfMonth"final day of a given month
    "BeginningOfMonth"first day of a given month
  • In the Jewish and Islamic calendars, the weekdays are Sunday through Thursday.
  • DayMatchQ takes the following options:
  • CalendarTypeAutomaticcalendar in which the date has been specified
    HolidayCalendar{"UnitedStates","Default"}holiday schedule and subspecification for the business day and holiday computations

Examples

open all close all

Basic Examples  (5)

Find out if today is a weekend day:

Find out if today is a business day:

Find out if today is a non-weekend holiday:

Find out if July 4 is a holiday in Brazil:

Find out if July 4 is a holiday in the US:

Scope  (3)

Input the date in string form:

What fraction of the time non-weekend holidays occur on Mondays:

Use the operator form to test for a specific day type:

Options  (3)

CalendarType  (1)

A day type will vary depending on the calendar associated with the date:

HolidayCalendar  (2)

The holiday calendar determines which days qualify as "Holiday":

Different markets within a country may have different holiday schedules:

Applications  (1)

Find the countries in this list for which Easter Monday (April 9 in 2012) is a holiday:

Properties & Relations  (2)

DayRange with a day type specification other than All is equivalent to a Select statement:

DayMatchQ[date,"BusinessDay"] is equivalent to BusinessDayQ[date]:

Possible Issues  (2)

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

A Sunday is part of the weekend in the Gregorian calendar and therefore cannot be a holiday:

However, a Sunday is not part of the weekend in the Jewish calendar and therefore can be a holiday:

Wolfram Research (2012), DayMatchQ, Wolfram Language function, https://reference.wolfram.com/language/ref/DayMatchQ.html (updated 2025).

Text

Wolfram Research (2012), DayMatchQ, Wolfram Language function, https://reference.wolfram.com/language/ref/DayMatchQ.html (updated 2025).

CMS

Wolfram Language. 2012. "DayMatchQ." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2025. https://reference.wolfram.com/language/ref/DayMatchQ.html.

APA

Wolfram Language. (2012). DayMatchQ. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/DayMatchQ.html

BibTeX

@misc{reference.wolfram_2025_daymatchq, author="Wolfram Research", title="{DayMatchQ}", year="2025", howpublished="\url{https://reference.wolfram.com/language/ref/DayMatchQ.html}", note=[Accessed: 15-August-2025]}

BibLaTeX

@online{reference.wolfram_2025_daymatchq, organization={Wolfram Research}, title={DayMatchQ}, year={2025}, url={https://reference.wolfram.com/language/ref/DayMatchQ.html}, note=[Accessed: 15-August-2025]}