Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Interval (in days) between 2 dates

Posted on 2002-05-26
7
148 Views
Last Modified: 2010-05-02
Hello,

How can I find the interval between 2 dates?

Examples:
IntervalDates("16/4/2002", "24/4/2002") will return 8
IntervalDates("28/2/2002", "1/3/2002") will return 1
IntervalDates("28/2/2000", "1/3/2000") will return 2
IntervalDates("31/12/2001", "1/1/2002") will return 1
IntervalDates("26/5/2002", Date)
etc...

Thanks in advance.
0
Comment
Question by:slavikn
7 Comments
 
LVL 70

Accepted Solution

by:
Éric Moreau earned 75 total points
ID: 7035653
Use DateDiff
0
 
LVL 44

Expert Comment

by:bruintje
ID: 7035660
Hi slavikn,

you can try something like

function intervaldate(Byval Date1 as string, _
                      Byval Date2 as string, _)
  intervaldate = cdate(date1)  -  cdate(date2)
end function

:O)Bruintje
0
 
LVL 4

Expert Comment

by:Monchanger
ID: 7035668
Just subtract one date from the other.

Public Function IntervalDates(ByVal StartDate As Date, ByVal EndDate As Date) As Integer

    IntervalDates = EndDate - StartDate
End Function

(PS - if you want to compare dates that are very far away, you should change the return value to 'long')

slavikn, you seem to be quite new to VB. I suggest that instead of spending a lot of points on this site with these questions (not that I mind collecting them ;-) ), you just check out a few of these sites for tutorials and code examples:

This site contains a lot of code by all types of programmers (Including a lot of beginner stuff)
http://www.planet-source-code.com

This site has a lot of well organized code:
http://www.freevbcode.com/

Another great site:
http://www.vbsquare.com/

Good luck.
0
Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
LVL 70

Expert Comment

by:Éric Moreau
ID: 7035669
I just saw that some of your dates are inversed, you should use the mm/dd/yyyy format not to have problem.

Private Sub Form_Load()
    MsgBox IntervalDates("4/16/2002", "4/24/2002") 'will return 8
    MsgBox IntervalDates("2/28/2002", "3/1/2002") 'will return 1
    MsgBox IntervalDates("2/28/2000", "3/1/2000") 'will return 2
    MsgBox IntervalDates("12/31/2001", "1/1/2002") 'will return 1
    MsgBox IntervalDates("5/26/2002", Date)
End Sub

Private Function IntervalDates(ByVal pdtm1 As Date, ByVal pdtm2 As Date) As Integer
    IntervalDates = Abs(DateDiff("d", pdtm1, pdtm2))
End Function
0
 
LVL 2

Expert Comment

by:Crin
ID: 7036406
emoreau, world is not limited to USA/Canada and somewhere else people uses dd/mm/yyyy date format, CDate function as well as other conversion functions are based on the system local settings. Only dates where day is 13 or greater will be converted right way in any conditions.

Sincerely,
Crin
0
 

Expert Comment

by:mani_m_in
ID: 7036508
      You can find the intervals between two Dates  by using the DateDiff Function.

       The syntax for this function is

       DateDiff("d",FirstDate,SecondDate)

 -it returns the interval between the two dates.

the same function also used for finding month and year difference between two dates by chaning the first parameter.

MM -- for Month difference
YYYY-Year Difference
 
0
 
LVL 1

Author Comment

by:slavikn
ID: 7037663
Thanks!
Most of all other answeres used the same function.
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

There are many ways to remove duplicate entries in an SQL or Access database. Most make you temporarily insert an ID field, make a temp table and copy data back and forth, and/or are slow. Here is an easy way in VB6 using ADO to remove duplicate row…
Article by: Martin
Here are a few simple, working, games that you can use as-is or as the basis for your own games. Tic-Tac-Toe This is one of the simplest of all games.   The game allows for a choice of who goes first and keeps track of the number of wins for…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question