list.number Act weird

Hello Anonymous 

try out this solution. It uses List.Dates to create a list of all days, filter it by weekenddays and count the items.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjLSM7DUMzJQ0lEyVYrVAQoYwAVMwAKGFnABY6XYWAA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [DeliveredDate = _t, TransitTime = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"DeliveredDate", type date, "de-DE"}, {"TransitTime", Int64.Type}}),
    CountWeekEndDays = Table.AddColumn
    (
        #"Changed Type",
        "Weekenddays",
        (row)=> List.Count(List.Select(List.Dates(Date.AddDays(row[DeliveredDate], (row[TransitTime]*-1)+1), row[TransitTime],#duration(1,0,0,0)), each Date.DayOfWeek(_)>4))
    )
in
    CountWeekEndDays

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

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Kudoes are nice too

Have fun

Jimmy