Custom format to show single-character day name

The custom number format ddd shows a 3-character day name and dddd shows the full day name. I would like to show the day-name as a single character using conditional formatting only. I know I can do it using a combination of TEXT and LEFT but I am looking for conditional formatting.
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Saqib Husain, SyedEngineerAsked:
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Rgonzo1971Commented:
Hi,

you have to make a serie of CF

like =WEEKDAY(E2)=1
=WEEKDAY(E2)=2

and use a custom format Format Number Custom and enter the corresponding Letter for each rule

like this "N", "M", ",T", ...

EDIT See example
Regards
CF1LetterDay.xlsx

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