Convert the date to day of the week. - NilsTitle

I need to convert the date 22/03/08 which is dd/mm/yy to what day it is which
is Saturday.  Is there a function that does that?  Or how can I do what I
want?

Thanks

Convert the date to day of the week. - BarbReinhard

Try this

=CHOOSE(WEEKDAY(A1),"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday")
--
HTH,
Barb Reinhardt

Convert the date to day of the week. - Ron Rosenfeld

On Sat, 22 Mar 2008 17:30:00 -0700, Nils Titley


You can format the cell (Format/Cells/Number/Custom Type: "dddd")

or you can use a formula:

=TEXT(cell_ref,"dddd")
--ron

Convert the date to day of the week. - Gord Dibben

If you just want to see the Saturday, format as dddd

If you want to actually convert, see other replies.


Gord Dibben  MS Excel MVP

On Sat, 22 Mar 2008 17:30:00 -0700, Nils Titley

Convert the date to day of the week. - NilsTitle

Thanks to all for responding but I am wondering.  Will I have a problem with
12/02/08.  This is not December 02,08 but it is Feb 12, 08.  The dd/mm/yy has
already caused a problem.  The macro is being used in South Africa.  I had to
force format on a date because it was changing the format.

The code below produced 02/12/08 when it is 12/02/08.  It worked only after
I changed below to Format(RunDate(MyNum), "dd/mm/yy")

With ActiveCell.Offset(0, 0)
.NumberFormat = "dd/mm/yy"
.Value = RunDate(MyNum)
.HorizontalAlignment = xlCenter

How do I force the day of the week?

Thanks , I hope I am making sense.

Convert the date to day of the week. - Ron Rosenfeld

On Sun, 23 Mar 2008 00:52:04 -0700, Nils Titley


I believe you may be misunderstanding how dates are being entered into Excel.

Excel stores dates as serial numbers with 1 = 1 Jan 1900.  It then formats that
result depending on the cell format.

However, a date expressed like 12/02/08 is ambiguous.  So when you enter that
value into a cell, Excel has to decide if you mean 12 Feb or 2 Dec.  It does
this by looking at the date settings -- NOT in Excel -- but at Control
Panel/Regional and Language Options.

So if your code is producing 2 Dec when you expect it to be producing 12 Feb,
you need to look at the output of RunDate(MyNum).  If the numeric value is
39490, then it is returning 12 Feb; if 39784, then 2 Dec.

If it is returning the desired date, then
.numberformat = "dddd" will return the correct day of the week.
--ron

Convert the date to day of the week. - NilsTitle

Ron,

Okay, but will setting the international xlDateOrder help? And how do I do
that in my Macro.

Convert the date to day of the week. - NilsTitle

Ron,

I confess, I don't know how to get the numeric value of it?

Convert the date to day of the week. - Dave Peterson

Where did you get MyNum?




--

Dave Peterson

Convert the date to day of the week. - NilsTitle

RunDate = Dim RunDate(0 To 25) As Date
MyNum = Dim MyNum As Long

You need more?

Convert the date to day of the week. - Ron Rosenfeld

On Sun, 23 Mar 2008 05:14:00 -0700, Nils Titley


Perhaps this will help:


=====================================
Option Explicit
Sub foo()
Const dt As Date = #2/12/2008#
Const dt2 As Date = #12/2/2008#

Debug.Print CLng(dt), Format(dt, "dddd, dd-mmm-yyyy")
Debug.Print CLng(dt2), Format(dt2, "dddd, dd-mmm-yyyy")

End Sub
====================================
--ron

Convert the date to day of the week. - Ron Rosenfeld

On Sun, 23 Mar 2008 05:09:00 -0700, Nils Titley


As I wrote before, you need to determine what your input is and insure that

RunDate(MyNum) is returning the proper date.

Excel can usually convert between one date format and another, but you need to
be certain that your RunDate function is returning an unambiguous date.
--ron

Convert the date to day of the week. - Dave Peterson

Yep.

Does the user type it in?  Do you pick it up from a cell?  Do you import it from
a text file?




--

Dave Peterson

Convert the date to day of the week. - NilsTitle

Ron,

I am not sure this is helping....

I changed what you have because I don't have #2/12/2008#  I have "02/12/2008".

When I do that I get debug print
A)  02/12/2008 = 39490 120208 (ddmmyy)
B)  12/02/2008 = 39784 021208 (ddmmyy)

A) ActiveCell.Offset(0, 17).Value = Format(CLng(dt), "ddmmyy")
B) ActiveCell.Offset(0, 18).Value = Format(CLng(dt2), "ddmmyy")
Results
A) 120208
B) 21208

I tried, what I call casting, RunDate(MyNum) as
CLng(RunDate(MyNum))

ActiveCell.Offset(0, 0).Value = Format(CLng(RunDate(MyNum)), "ddmmyy")
Data = 12/02/2008
Result = 21208
Expecte as above 120208

Please, I don't get it and don't know what to do.

Thanks

Convert the date to day of the week. - Dave Peterson

No response????


--

Dave Peterson

Convert the date to day of the week. - NilsTitle

Dave,

I am sorry.  I missed you replay.  This is the same macro I have been
working on.

The data are in CSV excel files.  I am taking the data from the file and
crunching the numbers and output it to another workbook.  The dates are in
the 12/2/2008 which is ddmmyyyy.  All the dates are in that format.
12/2/2008 is the first problem I have encoutered with the date. It things it
is mmddyyyy.

Gets loads the variable.
RunDate(Beat) = ActiveCell.Offset(0, 1).Value

Any other questions?

Thanks and I am sorry I missed your question.

Convert the date to day of the week. - Dave Peterson

If you're dates in the CSV file are in dmy order, then I would rename the
workbook to *.txt.  Then I could import the data and specify that field as a
date in dmy order.

I _think_ that what's happening is that other users have a different data
order.  The data that could pass for dates in that formatted will be converted
to a real date -- but probably not what you want.

For instance if the data shows:  12/02/2008
and you bring it in with your shortdate format of dmy, then you'll see a date of
Feb 12, 2008.

But if I bring it in using my mdy shortdate format, I'll see a date of Dec 2,
2008.

The real bad news is that with an ambiguous date format of mm/dd/yyyy, you can't
tell if the date is really want the CSV intended.

And those "dates" that do not look like dates that match the users short date
format (25/02/2008 for instance) will be a real date for you (dmy) = Feb 25,
2008.

For me with my mdy order, I'll get a text string of 25/02/2008.  It won't be a
date.

So my recommendation is to not rely on the user's setting.  Bring the data in a
different way--either by renaming the file as *.txt (so you see the wizard).

You could also try:  Data|Import external data|get data to see the same text to
columns wizard.

====
My real point is just because the value looks like a date doesn't mean that it
is a date.  And even if it is a date, it may not be what the original data
intended.




--

Dave Peterson

Convert the date to day of the week. - NilsTitle

Dave,

The data is not in the form 25/02/2008  it is 25022008.

I am going to have to process 60+ files.

Is there a quick way to rename the files to .txt?

And the last part to try.  I don't get because I could not find columns
wizard.

There has to be a better way to do a conversion.

Do you know anything about xlDateOrder  application.international?

I don't what else to do or how to move forward.  I am almost done with what
I need to do and this has set me back.

Thanks

Convert the date to day of the week. - NilsTitle

Ok, I found the wizard but I can't do that with 60+ files every day.  But I
don't think that is what you mean.

Convert the date to day of the week. - Dave Peterson

If the value in the CSV file is 25022008, then it's not a date (to excel!).

It's just an 8 digit number.

It's up to you to convert it to a date.

You could record a macro to select the column and then data|text to columns.
You can specify that this field is a date and is in dmy order.  After you
convert that 8 digit number to a real date, you can format the column in any
date format that you want.

If you're opening the file in a macro, then you could add this step (for each
field that needs it!) right after you open the file.




--

Dave Peterson

Convert the date to day of the week. - NilsTitle

Ok,

I see that there is a TextToColumns.  Can you help me.  Can I read the file
and write it back out over it self or do I have to create a new file?

Convert the date to day of the week. - NilsTitle

Ok but isn't there a built in function that will do the conversion without
calling another macro?

I am feeling a lot out of my element here.  I have run into these problems
before but that is when I was programming full time.  I am just learning how
to do what I want in VB with Excel.

Short example?

Convert the date to day of the week. - Dave Peterson

The builtin function is data|text to columns.  You could use worksheet functions
and parse the string into its parts, but it would require extra cells and would
be slower.

=date(right(a1,4),mid(a1,3,2),left(a1,2))

I recorded a macro when I selected a column and did the data|text to columns.

Then I tweaked the code:

Option Explicit
Sub testme()

Dim myRng As Range

With Worksheets("sheet1")
Set myRng = .Range("D1").EntireColumn
End With

With myRng
.TextToColumns Destination:=.Cells(1), _
DataType:=xlDelimited, _
TextQualifier:=xlDoubleQuote, _
ConsecutiveDelimiter:=False, _
Tab:=False, _
Semicolon:=False, _
Comma:=False, _
Space:=False, _
Other:=False, _
FieldInfo:=Array(1, 4)

.NumberFormat = "mmmm dd, yyyy"
.AutoFit
End With

End Sub





--

Dave Peterson

Convert the date to day of the week. - Dave Peterson

Ps.

I still don't know how you're opening the 60 .csv files.

But Ron de Bruin has some options here:
http://www.rondebruin.nl/csv.htm
http://www.rondebruin.nl/txtcsv.htm


--

Dave Peterson

Convert the date to day of the week. - Ron Rosenfeld

On Sun, 23 Mar 2008 07:52:00 -0700, Nils Titley


If you did that, in the CONST line, you would have gotten a "type mismatch"
error.  So I don't understand what you mean here or what you did.


I'm not familiar with your term "casting" in this context.  So again, I don't
understand what you mean.


Let me repeat: "Excel stores dates as serial numbers"

If you have a value, expressed as a serial number, of 21208 (or 021208), and
then try to express that as a date, it will translate to be 21,208 days after 1
Jan 1900, or Thursday, January 23, 1958.

You still haven't indicated what your RunDate function is doing, or what MyNum
is.

Also, perhaps you do not understand the formatting a cell as a date has
AABSOLUTELY NOTHING TO DO with how Excel interprets the value in that cell.  It
only determines how the value in that cell is displayed.

Excel interprets date input according to the settings/format in the REGIONAL
AND LANGUAGE settings (in Control Panel).  Usually, that format defines the
order (dmy, mdy, etc) as well as the separator (usually a "/").

If your data input does not conform to these specifications (i.e. if your data
is 120208 instead of 12/02/08), you will need to manipulate the data in order
to correct this.

If you could answer the questions I've posed, it should be possible to help.
--ron

Convert the date to day of the week. - NilsTitle

Dave

I open them one of the time after I have gotten all the files names.  I read
a file, process that file print the data to a worksheet.. continue

' Fill the array (myFiles) with the list of Excel files in the folder
NumFiles = 0
Do While FilesInPath <> ""
' Dynamically size MyFiles based on number of files
ReDim Preserve MyFiles(0 To NumFiles)
MyFiles(NumFiles) = FilesInPath
FilesInPath = Dir()
If (FilesInPath <> "") Then
NumFiles = NumFiles + 1
End If
Loop

Set WBNew = Workbooks.Add

' Change ScreenUpdating, Calculation and EnableEvents
With Application
CalcMode = .Calculation
.Calculation = xlCalculationManual
.ScreenUpdating = False
.EnableEvents = False
End With

' Loop through the files to process them
NumDone = 0

Do While (NumDone <= NumFiles)

Set FileBook = Workbooks.Open(MyPath & MyFiles(NumDone))


Does that help.

Convert the date to day of the week. - NilsTitle

In C you change the type to another type - my be my memory is wrong but I
believe the term is called casting

Convert the date to day of the week. - Dave Peterson

So you're opening the .CSV files via a macro.

You can add the code to convert the numbers to dates right after you open the
.CSV file.


--

Dave Peterson

Convert the date to day of the week. - NilsTitle

Dave,

I have been thinking that it might help if I tell you more about the process.

Each file will contain 1200 to 2000 rows of data.  10% of the data will not
be used.  The data lists the date of pickup, the truck that made the pickup,
the lat and long and some other informtion.  There will be in most cases
three runs per file.  As I parse through each row in the worksheet, I am
totaling # of pickups, meters between pickups and the total number of bins
picked up and other data.  After I parse all the rows, I generate three rows
to the report worksheet - one row for each run.  So in reality, I only have
to convert three dates from the numerical format to a date format.

I have not tried the routine you provided earlier as of yet.  But I have an
additional question.  Since the date is a numerical value, could I store that
value in a Long veriable and convert to the date just before I print it since
that is the only time I need it in that form and it is the only piece of data
that is giving me a hard time.  It seems like it would save processing and 3
out of 2000.

What do you think?

Thanks

Convert the date to day of the week. - Dave Peterson

You can use code like this to change 25022008 to a date:

Dim myCell As Range
Dim myDate As Date

Set myCell = Somerangehere

With myCell
myDate = DateSerial(Right(.Value, 4), Mid(.Value, 3, 2), Left(.Value, 2))
.NumberFormat = "mmmm dd, yyyy"
.Value = myDate
End With


--

Dave Peterson

Convert the date to day of the week. - NilsTitle

Dave

Thanks for the code.  I will give it a try.  I am doing some more analysis
of the data.  I may be running into user changing the data and so it is not
in its raw form.  When it is raw the date value is not in a date form but in
a general form.

I am going to add your code to see what happens.

I leave another message when I know some thing.

Dave, I appreciate the help you are giving me and the other suggestions you
have made.  You have been a big help to me.

Convert the date to day of the week. - NilsTitle

Dave

I did this:

Dim testDate As Date
With ActiveCell.Offset(0, 0)

testDate = DateSerial(Right(.Value, 4), Mid(.Value, 3, 2), Left(.Value,
2))
.NumberFormat = "dd/mm/yy"
.Value = testDate
End With

But I got a run time 13 error on the testDate line.

What am I actually doing with Right (.Value, 4) is that for the year,
Mid (.value, 3, 2) is that for the day and Left .... for the month.

Why did it stop. Can't I access the cell the way I did it?

Thanks

Convert the date to day of the week. - Dave Peterson

I'm guessing that the value in the Activecell isn't what you expected.

Add a line:

msgbox Activecell.value

before the line that causes the error.

ps.

Although this works:
Activecell.offset(0,0)
the .offset(0,0) doesn't really do much.

Why not just use Activecell?



--

Dave Peterson

Convert the date to day of the week. - NilsTitle

I am going to add more.  It had a problem because it doesn't have a value to
work on.  I am having a little trouble seeing how this works.

For example
RunDate(Beat) = ActiveCell.Offset(0, 1).Value  This takes the value and
loads the variable.
ActiveCell.Offset(0, 0).Value = Format((RunDate(MyNum)), "dd/mm/yy")
This line loads the date into the cell I want to store the date.

At what point do I use your new code and I don't see how to load the
variable or the value.  Please exaplain more...

Thanks sorry I don't see it.

Convert the date to day of the week. - Dave Peterson

I don't understand what rundate does.  It looks like it just holds a number and
doesn't do anything to convert that string of digits into a real date.

dim myDate as date
with activecell
if isempty(.value) then
'what happens if it's empty???
else
myDate = DateSerial(Right(.Value, 4), Mid(.Value, 3, 2), Left(.Value, 2))
.numberformat = "mmmm dd, yyyy"
.value = mydate
end if
end with



--

Dave Peterson

Convert the date to day of the week. - NilsTitle

RunDate(Beat) = ActiveCell.Offset(0, 1).Value

Dim testDate As Date
With ActiveCell.Offset(0, 1)
MsgBox ActiveCell.Value
testDate = DateSerial(Right(.Value, 4), Mid(.Value, 3, 2),
Left(.Value, 2))
.NumberFormat = "dd/mm/yy"
.Value = testDate
End With

Msgbox showed : 1 how can that be should the value be a date?

Thanks

Convert the date to day of the week. - NilsTitle

David,

I made an interesting discovery about the data.  When I look at the format
of the date in the CVS file it is in General format as a date.  If I try
putting a date in it is in date format.  If I change a date to changes it to
the date number.

How do I format the whole column in the general format?

I still want to change the numbers but I can't get what you provided to work.

Convert the date to day of the week. - Dave Peterson

If you run it more than one time, the original value was replaced with a date.


--

Dave Peterson

Convert the date to day of the week. - Dave Peterson

Try recording a macro when you select a column and change the format.

I don't have another guess why you're having trouble.  You'll have to provide
more details of what you tried.


--

Dave Peterson

Convert the date to day of the week. - NilsTitle

Dave,

I am going to stop working on this right at the moment.  Clean up the code
and send it to my friend and see if he finds any date problems.  I think
there will be a problem for Dec months.  I also think that when the date is
in the General format it works.

I can not get the DateSerial to parse correctly but I can address that later.

Thank you for all your effort and assistance.  You have been very good about
helping me and I appreciate it very much.  I hope when I come back with some
more things on this you will help me.

Regards,

Convert the date to day of the week. - Dave Peterson

Ahhh.

It could be because not all those numbers will be 8 digits (if the day is before
the 10th!).

dim myStr as string
dim myDate as date
with activecell
mystr = format(.value, "00000000") 'add leading 0's if they're not there
myDate = DateSerial(Right(mystr, 4), Mid(mystr, 3, 2), Left(mystr, 2))
.NumberFormat = "mmmm dd, yyyy"
.Value = myDate
end with

=====
There could be other problems, too.  If this doesn't help, make sure you post
back with the offending string.


--

Dave Peterson

Convert the date to day of the week. - ward376

Nils - with the regional date settings you've described, and the
imported "date" in cell a2, in a cell formatted "general" the formula
below will return the NUMBER that represents the date for the ddmmyyyy
format you've described. Your example of 25022008 would appear as
39503 representing February 25, 2008.

=VALUE(CONCATENATE(MID(a2,3,2),"/",LEFT(a2,2),"/",RIGHT(a2,2)))

Then you can FORMAT it as a date.

Cliff Edwards