DateRange

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`DateRange`

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DateRange[date₁,date₂]

gives all dates in the range from date₁ to date₂.

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DateRange[date₁,date₂,increment]

gives the dates in the range from date₁ to date₂ that are increment apart.

Details and Options

Dates can be specified in the following forms:

	DateObject[…]	date object
	{y,m,d,h,m,s}	precise time
	{y,m,d}	year, month, day
	{y,m}	the first day of the specified month
	{y}	the first day of the first month of the year y
	"string"	date as a string ("Jan. 1, 2022")
	time	absolute time specification

{y,m,d} is taken to be equivalent to {y,m,d,0,0,0} etc.
Possible increments are denominated in the following calendar steps and day types: "Year", "Quarter", "Month", "Week", "Day", "Hour", "Minute", "Second", "Weekday", "Weekend", Monday through Sunday, "EndOfMonth", "BeginningOfMonth", and "BusinessDay".
Mixed-radix increments are permitted.
An increment may be specified using the Quantity framework.
In DateRange[date₁,date₂] where date₂ is a granular DateObject, range results will include all dates through the end of date₂.
DateRange takes the following option:

	CalendarType	"Gregorian"	calendar in which the date parameters have been specified
	HolidayCalendar	{"UnitedStates","Default"}	holiday schedule and subspecification for the business day and holiday computations

Examples

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Basic Examples (4)Summary of the most common use cases

Give all the dates in a date range:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-fuqw5p

Out[1]=1

Increment dates by one week:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-5g1i3

Out[1]=1

Increment dates by one year, one month, and one day:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-ffgpzo

Out[1]=1

DateRange has constraints similar to Range:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-tgf40

Out[1]=1

Scope (5)Survey of the scope of standard use cases

The output is sensitive to the choice of step size:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-qy2dnj

Out[1]=1

In[2]:=2

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https://wolfram.com/xid/0cg4y2aai-h6234k

Out[2]=2

Increment can be specified using the quantity framework:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-q3qh3s

Out[1]=1

DateRange interprets string inputs:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-j75dyb

Out[1]=1

The increment "Week" is equivalent to {1,"Week"}:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-iicie

Out[1]=1

The increment must be net-negative if the endpoints are not in chronological order:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-mgw3h

Out[1]=1

Options (4)Common values & functionality for each option

CalendarType (3)

Create a list of Jewish calendar dates:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-rtxhz5

Out[1]=1

Create a list of consecutive weekly dates in the Jewish calendar:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-06ne0

Print all dates for the current Islamic year:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-bph2c1

Out[1]=1

In[2]:=2

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https://wolfram.com/xid/0cg4y2aai-cipqpg

HolidayCalendar (1)

Different markets within a country may have different holiday schedules:

In[1]:=1

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https://wolfram.com/xid/0cg4y2aai-ezamfy

Out[1]=1

In[2]:=2

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https://wolfram.com/xid/0cg4y2aai-eilqej

Out[2]=2

In[3]:=3

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https://wolfram.com/xid/0cg4y2aai-g0vi4g

Out[3]=3

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