

DayRound
Details and Options


- DayRound returns a DateObject expression.
- 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 time absolute time specification - Possible day types are:
-
All any 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 calendar, the weekdays are Sunday through Thursday.
- DayRound[date] is equivalent to DayRound[date,All].
- Recognized rounding values are: "Next", "Following", "ModifiedFollowing", "Preceding", "Previous", and "ModifiedPreceding".
- If date is of daytype, DayRound has no effect.
- DayRound takes the following options:
-
CalendarType Automatic calendar in which the dates have been specified HolidayCalendar {"UnitedStates","Default"} holiday schedule and subspecification for the business day and holiday computations
Examples
open all close allBasic Examples (3)
Scope (2)
Options (2)
Related Guides
Text
Wolfram Research (2012), DayRound, Wolfram Language function, https://reference.wolfram.com/language/ref/DayRound.html (updated 2025).
CMS
Wolfram Language. 2012. "DayRound." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2025. https://reference.wolfram.com/language/ref/DayRound.html.
APA
Wolfram Language. (2012). DayRound. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/DayRound.html
BibTeX
@misc{reference.wolfram_2025_dayround, author="Wolfram Research", title="{DayRound}", year="2025", howpublished="\url{https://reference.wolfram.com/language/ref/DayRound.html}", note=[Accessed: 13-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_dayround, organization={Wolfram Research}, title={DayRound}, year={2025}, url={https://reference.wolfram.com/language/ref/DayRound.html}, note=[Accessed: 13-August-2025]}