Using a Two-Character Day of the Week in a Date Format

by Allen Wyatt
(last updated November 23, 2019)

3

Raymond's work requires that he format dates so they show in what he believes is a rather odd format. If, for instance, a cell contains a date of 10/20/19, he needs it to display as "SU 10/20", without the quotes. (SU is a two-character representation of the day of the week, in this case Sunday.) Raymond wonders if there is a way to do this as, perhaps, a custom format.

There is no way to do this exactly using a custom format. The reason is that there is no code in custom formats that allow you to create a two-character day of the week. The closest that could be done in a custom format is for a three-character day of the week:

ddd m/d

Even that, though, is a bit off because it won't do the three-character day of the week in uppercase.

So, that leads us to using a formula to come up with the formatted date. If you have the date in cell A1, you could use the following formula:

=LEFT(UPPER(TEXT(A1,"ddd")), 2) & " " & TEXT(A1,"m/d")

This uses the TEXT function to return, first, the three-character day of the week which is converted to uppercase using the UPPER formula. The LEFT function is then used to grab the first two characters of that weekday which is then added to the month/day combination. This returns exactly what Raymond wanted.

The downside to using this approach is that the date returned by the formula is text; it is not an actual date. If we had been able to use a custom format, the underlying date value would have been unchanged. This, though, would be the case for any odd date formatting like this. Because of this potential downside, you may want to retain the actual dates as dates, even if it is in a hidden column or a hidden worksheet.

You could also, if desired, create a macro that would return a string with the formatted date. Here's a simple user-defined function:

Function FmtDate(d As Date) As String
    Dim s As String

    s = UCase(Left(WeekdayName(Weekday(d)), 2))
    s = s & " " & Format(d, "m/d")
    FmtDate = s
End Sub

You can then use the function in the following way in your worksheet:

=FmtDate(A1)

This assumes the date is in A1, and the function returns a date string formatted as Raymond desires.

Note:

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Author Bio

Allen Wyatt

With more than 50 non-fiction books and numerous magazine articles to his credit, Allen Wyatt is an internationally recognized author. He is president of Sharon Parq Associates, a computer and publishing services company. ...

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Comments

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What is 5 - 4?

2019-11-25 16:53:45

Yvan Loranger

How about =choose(weekday(a1),"SU","MO","TU","WE","TH","FR","SA")&" "&month(a1)&"/"&day(a1)


2019-11-23 08:05:09

Willy Vanhaelen

@Joe: elegant solution!

For who prefers to work with the UDF, here is a one-liner version :

Function FmtDate(d As Date) As String
FmtDate=UCase(Left(WeekdayName(Weekday(d)),2))&" "&Format(d,"mm/dd")
End Function

It ends with a End Function istead of End Sub in this tip which of cource causes an error. This also proves that the function was not even tested.


2019-11-23 06:36:42

Joe

You can use several conditional formatting rules to achieve this and still keep the cell value as a date. Set up 7 conditional formatting formulae

'=WEEKDAY(A1,2)=1' through to '=WEEKDAY(A1,2)=7'

and set a custom number format for each to

'"Mo " dd/mm' through to '"Su " dd/mm' (or '"Mo " mm/dd' etc for American style dates).

Apply this to all relevant cells and the cells stay as dates, but display as required.


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