PreviousDate

PreviousDate[gran]

gives the previously occurring date of the specified granularity type gran.

PreviousDate[daytype]

gives the previous day corresponding to the specified daytype.

PreviousDate[date,gran]

gives the previous date of the given granularity relative to the specified date.

Details and Options

  • PreviousDate[gran] returns a DateObject expression.
  • In PreviousDate[gran], the granularity type gran can be any of the following:
  • "Millennium"1000-year period beginning with year XX00
    "MillenniumBeginning01"1000-year period beginning with year XX01
    "Century"100-year period beginning with year XX00
    "CenturyBeginning01"100-year period beginning with year XX01
    "Decade"10-year period including the date
    "Year"year including the date
    "Quarter"3-month quarter including the date
    "Month"month including the date
    "Week"week beginning Monday including the date
    "WeekBeginningSunday"week beginning Sunday including the date
    "Day"day including the date
    "Hour"hour including the date
    "Minute"minute including the date
    "Second"second including the date
  • In PreviousDate[daytype], the day type specification daytype can be any of the following: "Weekday", "WeekendDay", Monday through Sunday, "MonthFirstDay", "MonthLastDay" and "BusinessDay".
  • The following options can be given:
  • CalendarType Automaticcalendar system for the result
    TimeZone $TimeZonetime zone for the result

Examples

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Basic Examples  (3)

Get a date object representing the previous month:

Get the date object for the previous hour:

Get the week before a given date:

Find the day before the fall of Saigon:

Get the previous weekday:

Find the Sunday before the day of independence in Ghana:

Scope  (1)

Date specifications may be a DateObject, DateList or DateString:

Options  (2)

CalendarType  (1)

Get a granular date using the Jewish calendar:

TimeZone  (1)

Get a granular date with a specific time zone:

Properties & Relations  (1)

Yesterday is equivalent to PreviousDate["Day"]:

Wolfram Research (2017), PreviousDate, Wolfram Language function, https://reference.wolfram.com/language/ref/PreviousDate.html (updated 2019).

Text

Wolfram Research (2017), PreviousDate, Wolfram Language function, https://reference.wolfram.com/language/ref/PreviousDate.html (updated 2019).

CMS

Wolfram Language. 2017. "PreviousDate." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2019. https://reference.wolfram.com/language/ref/PreviousDate.html.

APA

Wolfram Language. (2017). PreviousDate. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/PreviousDate.html

BibTeX

@misc{reference.wolfram_2024_previousdate, author="Wolfram Research", title="{PreviousDate}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/PreviousDate.html}", note=[Accessed: 26-December-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_previousdate, organization={Wolfram Research}, title={PreviousDate}, year={2019}, url={https://reference.wolfram.com/language/ref/PreviousDate.html}, note=[Accessed: 26-December-2024 ]}