Transform from text to date

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WCilNVTAwVghOLdBRMDKwMjW1MjZWcPcNAXKMTJRiYwE=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t]),
    #"Added Custom" = Table.AddColumn(Source, "Custom", each DateTimeZone.FromText(Text.Replace([Column1],"GMT ","+00 "),[Format="ddd dd MMM, HH:mm:ss zz yyyy"]),type datetimezone)
in
    #"Added Custom"

How to use this code: Create a new Blank Query. Click on "Advanced Editor". Replace the code in the window with the code provided here. Click "Done". Once you examined the code, replace the Source step with your own source.