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expression function - days in month [2016/09/14 14:19] (current)
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 +====== Days in Month (Expression Function) ======
  
 +===== Purpose =====
 +The **Days in Month** function (DAYS_IN_MONTH) generates a number that represents how many days are in the month that a given unix timestamp appears in. 
 +
 +{{:​days_in_month_initial.png?​direct&​600|}}
 +
 +===== Parameters =====
 +The **Days in Month** function has two parameters, one of which is required:
 +
 +==== Timestamp ====
 +
 +Allowed Inputs: [[Field|field]] value or a number representing a Unix timestamp.
 +
 +There are several sources of Unix timestamps available. ​ For example the stored value of a [[Field Type - Date|date]] or [[Field Type - Date Time| date time]] field is a Unix timestamp. ​ Also When using the advanced interface the output of the [[Expression Function - Date|date]] or [[Expression Function - Date and Time| date time]] expression function is a Unix timestamp.
 +
 +==== Timezone ====
 +
 +Allowed Inputs: [[Field|field]] value or a text string
 +
 +The second optional parameter of the **Days in Month** function is a string that represents the timezone. ​ Either use the  query builder to choose a field that contains the value or use type a value to enter a number. ​ The value should be based on the tz (timezone) database used by Linux and other Unix system in the form “Area/​Location” e.g. "​America/​New_York"​. ​ If no value is provided then the current user's timezone is used.
 +
 +===== Output =====
 +
 +The output of the **Days in Month** function is number representing the number of days in the month that the Unix timestamp lands in.
 +
 +===== Example =====
 +
 +For example DAYS_IN_MONTH(946702800) would result in 31.
expression function - days in month.txt · Last modified: 2016/09/14 14:19 (external edit)
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