Microsoft KB Archive/171044

= WD97: How to Determine the Number of Days Between Two Dates =

Article ID: 171044

Article Last Modified on 7/13/2007

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APPLIES TO


 * Microsoft Word 97 Standard Edition

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This article was previously published under Q171044





SUMMARY
To determine the number of days between two dates, using Visual Basic for Applications you can convert dates to serial numbers and subtract one number from the other.



MORE INFORMATION
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The following Visual Basic for Applications sample macro prompts for a date in the mm/dd/yy format, and returns the number of days between the current date and the specified date.

The DateValue function converts a specified date, beginning with December 30, 1899, to a serial number.

Syntax: DateValue(DateText$)

Examples
x = DateValue("12/30/1899") ' returns 0 or zero x = DateValue("12/31/1899") ' returns 1 x = DateValue("12/5/1992")  ' returns 33943 The Sgn function is used to determine if the difference between two dates is a negative(date in the past) or positive(date in the future) number. Sub DayDiff Dim sDate As String Dim intNumDays As Integer On Error GoTo errhandler ' Prompt for a date. sDate = InputBox$("Enter a date in the mm/dd/yy format") ' Get difference between dates. intNumDays = CInt(DateValue(sDate) - Now) ' Determine if difference is past or future. If Sgn(intNumDays) = 1 Then MsgBox "Days between " + sDate + " and today :" + CStr(intNumDays) Else MsgBox "The date " + sDate + " was" + CStr(Abs(intNumDays)) _ + " day(s) ago." End If  errhandler: If Err > 0 Then MsgBox "Please enter a valid date." End Sub For additional information, please see the following article in the Microsoft Knowledge Base:

173707 OFF97: How to Run Sample Code from Knowledge Base Articles

