Knowledge Base

WD97: How To Perform Calculations With Dates And Times

Article ID: 161328

Article Last Modified on 7/13/2007

APPLIES TO

Microsoft Word 97 Standard Edition

This article was previously published under Q161328

SUMMARY

This article provides several examples of how to use Visual Basic for Applications macros to perform calculations on dates and times. Word does this by first converting a date or time into a serial number. Word then uses the serial number in calculations and converts it back into a standard date or time format.

MORE INFORMATION

Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs. If you have limited programming experience, you may want to contact a Microsoft Certified Partner or the Microsoft fee-based consulting line at (800) 936-5200. For more information about Microsoft Certified Partners, please visit the following Microsoft Web site:

https://partner.microsoft.com/global/30000104

For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

Examples:

   Sub Date_DateCalc()
      'To calculate a date seven days from the current date.
      MsgBox DateSerial(Year(Now), Month(Now), Day(Now) + 7)
   End Sub

   Sub Date_YourAge()
      'To return your age in number of days.
      'Replace "mm/dd/yy" with your birth date.
      MsgBox Int(Now - DateValue("mm/dd/yy"))
   End Sub

   Sub Date_DivideTime()
      'To display 6:00 AM (because 6:00 AM is one-half of 12:00 PM).
      MsgBox TimeSerial(12 / 2, 0, 0)
   End Sub

   Sub Date_CurrentDateTime()
      'The current date and time.
      MsgBox Now
   End Sub

   Sub Date_LastDayPreviousMonth()
      'To calculate the last day of the previous month.
      MsgBox (Now - Day(Now))
   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

REFERENCES

For more information about getting help with Visual Basic for Applications, please see the following article in the Microsoft Knowledge Base:

163435 VBA: Programming Resources for Visual Basic for Applications

Additional query words: wordcon vb vba vbe

Keywords: kbdtacode kbhowto kbmacroexample kbprogramming KB161328

Microsoft KB Archive/161328

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