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# Calculating with custom date format.

Posted on 2012-04-02
Medium Priority
293 Views
Hi EE,

Help needed here. I use imported data where dates are expressed in this format:

yy.mm.dd

Example: 12.03.30

And I have pair of data, where I need to get the days between dates.

Example:

A1 = 12.03.12
A2 = 12.03.30

A2 - A1 = 18 days.

How to compute this in Excel?

Thanks.
0
Question by:capterdi
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LVL 81

Accepted Solution

byundt earned 1200 total points
ID: 37797429
In US Excel with dates all in year 2000 or later, the following formula works:
=SUBSTITUTE("20" & A2,".","/")-SUBSTITUTE("20" & A1,".","/")
0

Author Closing Comment

ID: 37797444
Excellent.

Thanks.
0

LVL 81

Expert Comment

ID: 37797464
I wasn't sure if the formula would be working in Mexico--because you might be using a different default date format (dd/mm/yy).

The following formula should always work:
=DATE(LEFT(A2,2),MID(A2,4,2),RIGHT(A2,2))-DATE(LEFT(A1,2),MID(A1,4,2),RIGHT(A1,2))
0

Author Comment

ID: 37797896
Both formulas have worked OK. I use english version of Excel.

Thanks.
0

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