Not sorting correctly

With Power Query, I was able to combine the dates and times and then sort them.

let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}, {"Column2", type text}, {"Column3", type text}, {"Column4", type time}, {"Column5", type text}, {"Column6", Int64.Type}, {"Column7", Int64.Type}, {"Column8", type text}, {"Column9", Int64.Type}, {"Column10", Int64.Type}, {"Column11", Int64.Type}, {"Column12", type date}, {"Column13", Int64.Type}}),
    #"Inserted Merged Date and Time" = Table.AddColumn(#"Changed Type", "Merged", each [Column4] & [Column12], type datetime),
    #"Sorted Rows" = Table.Sort(#"Inserted Merged Date and Time",{{"Merged", Order.Ascending}})
in
    #"Sorted Rows"

Power Query is a free AddIn for Excel 2010 and 2013, and is built-in functionality from Excel 2016 onwards (where it is referred to as "Get & Transform Data").

It is a powerful yet simple way of getting, changing and using data from a broad variety of sources, creating steps which may be easily repeated and refreshed. I strongly recommend learning how to use Power Query - it's among the most powerful functionalities of Excel.

- Follow this link to learn how to install Power Query in Excel 2010 / 2013.

- Follow this link for an introduction to Power Query functionality.

- Follow this link for a video which demonstrates how to use Power Query code provided.