Dates and Time

Arrays of date and time values that can be displayed in different formats

The date and time data types datetime, duration, and calendarDuration support efficient computations, comparisons, and formatted display of dates and times. Work with these arrays in the same way that you work with numeric arrays. You can add, subtract, sort, compare, concatenate, and plot date and time values. You also can represent dates and times as numeric arrays or as text. For more information, see Represent Dates and Times in MATLAB or watch Date and Time Arrays.

Functions

Create Date and Time Arrays

Create datetime Arrays

`datetime`	Arrays that represent points in time
`NaT`	Not-a-Time

Create duration Arrays

`years`	Duration in years
`days`	Duration in days
`hours`	Duration in hours
`minutes`	Duration in minutes
`seconds`	Duration in seconds
`milliseconds`	Duration in milliseconds
`duration`	Lengths of time in fixed-length units

Create calendarDuration Arrays

`calyears`	Calendar duration in years
`calquarters`	Calendar duration in quarters
`calmonths`	Calendar duration in months
`calweeks`	Calendar duration in weeks
`caldays`	Calendar duration in days
`calendarDuration`	Lengths of time in variable-length calendar units

Split Dates and Times

Extract Components by Time Unit

`year`	Year number
`quarter`	Quarter number
`month`	Month number and name
`week`	Week number
`day`	Day number or name
`hour`	Hour number
`minute`	Minute number
`second`	Second number

Split into Numeric Arrays

`ymd`	Year, month, and day numbers of datetime
`hms`	Hour, minute, and second numbers of datetime or duration
`split`	Split calendar duration into numeric and duration units
`time`	Convert time of calendar duration to duration
`timeofday`	Elapsed time since midnight for datetimes

Determine Type, Time Zone Offset, Leap Seconds

`isdatetime`	Determine if input is datetime array
`isduration`	Determine if input is duration array
`iscalendarduration`	Determine if input is calendar duration array
`isnat`	Determine NaT (Not-a-Time) elements
`isdst`	Determine daylight saving time elements
`isweekend`	Determine weekend elements
`leapseconds`	List all leap seconds supported by `datetime` data type
`timezones`	List time zones
`tzoffset`	Time zone offset from UTC

Shift or Calculate Differences Between Dates

`between`	Calendar math differences
`caldiff`	Calendar math successive differences
`dateshift`	Shift date or generate sequence of dates and time
`isbetween`	Determine elements within date and time interval

Convert to Numbers and Strings

Convert to Numbers

`datenum`	Convert date and time to serial date number
`convertTo`	Convert `datetime` values to numeric representations
`datevec`	Convert date and time to vector of components
`exceltime`	Convert MATLAB datetime to Excel date number
`juliandate`	Convert MATLAB datetime to Julian date
`posixtime`	Convert MATLAB datetime to POSIX time
`yyyymmdd`	Convert MATLAB datetime to YYYYMMDD numeric value
`addtodate`	Modify date number by field

Convert to Strings

`char`	Character array
`string`	String array
`datestr`	Convert date and time to string format

Current Date and Time as Numbers or String

`now`	Current date and time as serial date number
`clock`	Current date and time as date vector
`date`	Current date as character vector

Day of Calendar Week or Month

`calendar`	Calendar for specified month
`eomday`	Last day of month
`weekday`	Day of week

Elapsed Time as Number

etime Time elapsed between date vectors

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