Date.StartOfMonth

 

This topic applies to the Power Query Formula Language which can be used with Power Query and Power BI Desktop to build queries that mashup data. See the list of function categories.

Returns a DateTime value representing the start of the month.

Date.StartOfMonth(dateTime as nullable datetime) as nullable datetime  

ArgumentDescription
dateTimeThe DateTime to check against.
  • The date and time portions are reset to their initial values for the month.

  • The timezone information is persisted.

dateTime = DateTimeZone.FromText("2011-02-21T12:30:00-08:00");  
Date.StartOfMonth(dateTime) equals 2011-02-01T00:00:00-08:00  

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