Date.EndOfMonth Function in Power Query

The Date.EndOfMonth function returns the end of the month.

Syntax

Date.EndOfMonth(dateTime as any) as any

Example: Get the end of the month for the given dates.

Power Query M

let
  Source = Table.FromRecords(
    {
      [Year = "20-07-2024"], 
      [Year = "21-07-2024"], 
      [Year = "22-07-2024"], 
      [Year = "23-07-2024"], 
      [Year = "24-07-2024"], 
      [Year = "25-07-2024"], 
      [Year = "26-07-2024"], 
      [Year = "27-07-2024"], 
      [Year = "28-07-2024"], 
      [Year = "29-07-2024"], 
      [Year = "30-07-2024"], 
      [Year = "31-07-2024"], 
      [Year = "01-08-2024"], 
      [Year = "02-08-2024"], 
      [Year = "03-08-2024"], 
      [Year = "04-08-2024"], 
      [Year = "05-08-2024"], 
      [Year = "06-08-2024"]
    }
  ), 
  #"Changed Type" = Table.TransformColumnTypes(Source, {{"Year", type date}}), 
  Return = Table.AddColumn(#"Changed Type", "End Of Month", each Date.EndOfMonth([Year]))
in
    Return

The output of the above code is shown below:

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