You do have Power Query which is called Get and Transform data found on the Data Tab.
let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    #"Grouped Rows" = Table.Group(Source, {"day"}, {{"Count", each Table.RowCount(Table.Distinct(_)), Int64.Type}})
in
    #"Grouped Rows"
Excel 2016 (Windows) 32 bit
A
B
1
 day Count
2
 Fri
44
3
 Sat
46
4
 Sun
41
5
 Mon
48
6
 Tue
44
7
 Wed
46
8
 Thu
46
Sheet: Table1

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.


Please update your profile to XL2019 as it is currently listed as XL2016