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Operator Type: 

Operator Scope of Action: 

Operator Purpose: 

Operator First Added: 

Operator Altered: 

 Function   [other Function type actions]

 Item   [operators of similar scope]

 Date-time   [other Date-time operators]

 Already in v5.0.0



Alternatively, use


returns the day of the month from the theDate expression, which may simply be a date-type attribute value.


creates a new date based on the theDate expression, but in which the day of the month is value. theDate is not changed - unless theDate is an attribute and the attribute is re-setting itself:

$MyDateA = day($MyDate,14) $MyDate is unaltered

$MyDate = day($MyDate,14) $MyDate is changed

Examples. If $MyDate is July 4, 2009 then

day($MyDate) …is 4

If $MyDate is July 4,2009, then


will change $MyDate to July 5, 2009.

Possible relevant notes (via "Similar Notes" feature):

A Tinderbox Reference File : Actions & Rules : Operators : Full Operator List : day(theDate[,value])