Date & Time
The Wolfram Language has a highly flexible system for representing dates and times symbolically and performing computations on them. It can also input and output dates and times in a wide range of formats, as well as handle all standard calendars.
DateObject — an object representing a date of any granularity (year, hour, instant, ...)
TimeObject — an object representing a time of day
DateInterval — an object representing an interval of time
CalendarType ▪ TimeZone ▪ TimeSystem ▪ DateFormat
Now — current date and time
Today, Tomorrow, Yesterday — day specifications
CurrentDate — date to a specified granularity (year, day, hour, …)
NextDate, PreviousDate — next, previous dates of specified granularity (year, day, hour, …)
InfiniteFuture, InfinitePast — representations for unbounded times
DateString — current or specified date as a string in many possible formats
FromDateString — convert a date string to a date object
"DateTime" ▪ "MonthName" ▪ "DayName" ▪ "Hour24" ▪ ...
$DateStringFormat — default date string format
DateList — date elements as numbers in {y,m,d,h,m,s} format
AbsoluteTime — absolute time in seconds
Clock — real-time dynamic clock variable
DatedUnit — represent a currency unit at a specific date
Time Zones »
LocalTime — local time at any location
LocalTimeZone ▪ TimeZoneConvert
TimeZoneOffset — numeric offset between different time zones
$TimeZone — resettable default time zone
$SystemTimeZone — time zone used by your system
$TimeZoneEntity — resettable time zone entity corresponding to your locale
Calendars
CalendarConvert — convert a date from one calendar to another
CalendarData — discover available calendars and their properties
LeapVariant — mark leap months, leap weeks or other leap elements of a date
"Gregorian" ▪ "Jewish" ▪ "Chinese" ▪ "ISOWeek" ▪ ...
Elements of Dates
DateValue — extract year, month, day, hour, etc. from dates
DayName — determine day of the week
Monday ▪ Tuesday ▪ Wednesday ▪ Thursday ▪ Friday ▪ Saturday ▪ Sunday
Date Operations
DateSelect — select dates based on a criterion
DateRange — generate a list of dates
DatePlus — add or subtract days, weeks, etc. in a date list or string
DateDifference — find the difference in days, weeks, etc. between two dates
DateBounds — find the first and last dates from a list of dates
MidDate — midpoint date of a granular date or list of dates
TimeZoneConvert — convert between different time zones
TimeSystemConvert — convert between different time systems
ConformDates — gives a list of dates with conforming properties
Nearest — find nearest dates or times in a list
Tests on Dates
DateWithinQ — test if one date is contained within another
DateOverlapsQ — test if two dates are overlapping
DateObjectQ — test if an expression is a valid date object
TimeObjectQ — test if an expression is a valid time object
LeapYearQ — determine if the date is in a leap year
Day Operations
DayRange — generate a list of days
DayPlus — add or subtract days
DayRound — round to the nearest day of a specific type
DayCount — compute the difference between days
DayMatchQ — determine the day type
BusinessDayQ — determine if the day is a business day
Astronomical Information »
AstroPosition — observed position of astronomical objects from a location at a given time
Sunrise, Sunset — time of sunrise, sunset for any location
DaylightQ ▪ SunPosition ▪ MoonPosition ▪ MoonPhase ▪ SiderealTime ▪ ...
Date & Time Visualization »
TimelinePlot — display dates and times on a timeline, with labels, etc.
DateListPlot — plot date-value curves
DateHistogram ▪ DateListLogPlot ▪ StackedDateListPlot ▪ ...
Time Series Processing »
TimeSeries — represent a time series for processing
MovingMap ▪ TimeSeriesMap ▪ Mean ▪ ...
Financial Time Series »
TradingChart — trading chart with technical indicators
InteractiveTradingChart ▪ CandlestickChart ▪ KagiChart ▪ ...
Descriptive Statistics for Dates & Times
ConformDates — conform a list of dates or times
Mean — compute descriptive statistics for dates and times
BiweightLocation ▪ BiweightMidvariance ▪ CentralMoment ▪ Correlation ▪ Covariance ▪ Cumulant ▪ InterquartileRange ▪ Kurtosis ▪ Mean ▪ MeanDeviation ▪ Median ▪ MedianDeviation ▪ QnDispersion ▪ Quantile ▪ QuartileDeviation ▪ Quartiles ▪ QuartileSkewness ▪ RankedMax ▪ RankedMin ▪ Skewness ▪ SnDispersion ▪ StandardDeviation ▪ TrimmedMean ▪ TrimmedVariance ▪ Variance ▪ WinsorizedMean ▪ WinsorizedVariance
Distributions for Dates & Times
DateDistribution — a distribution of dates from any numerical distribution
TimeDistribution — a distribution of times from any numerical distribution
Date Import/Export
Interpreter — interpret a string as a date, potentially with semantic transformations
"Table" ▪ "XLS" ▪ "MDB" ▪ "ApacheLog" ▪ "MBOX" ▪ ...
DatePattern — date pattern for string manipulation
UnixTime ▪ FromUnixTime ▪ FromAbsoluteTime
CPU Timing »
Timing ▪ AbsoluteTiming ▪ TimeConstrained ▪ SessionTime ▪ ...
Scheduled Tasks »
ScheduledTask — represent a task scheduled to run at particular times
SessionSubmit ▪ LocalSubmit ▪ CloudSubmit ▪ HandlerFunctions ▪ TaskObject