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Old 09-11-2011, 02:06 AM
USAOz USAOz is offline Formula to calculate Leap Year Windows 7 32bit Formula to calculate Leap Year Office 2010 32bit
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Formula to calculate Leap Year
 
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Cool Formula to calculate Leap Year

I need a formula that will calculate if a year that falls with in a fiscal (financial) year is a Leap Year or not.



For example if I enter the start date for a fiscal year in a cell (e.g. 1 July 2011) and the end date of the fiscal year in another cell (e.g. 30 June 2012) I'd like a message to be displayed in the formula cell saying "Leap Year" if ANY part of the date range falls in a Leap Year (as it would in this example) or a blank cell (no text) if the entire date range does NOT fall in any Leap Year.

Any ideas on how this calculation could be done?
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Old 09-11-2011, 02:45 PM
Colin Legg's Avatar
Colin Legg Colin Legg is offline Formula to calculate Leap Year Windows 7 32bit Formula to calculate Leap Year Office 2010 32bit
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Hi,

This article from MS shows how to calculate if a given year is a leap year:
Code:
http://support.microsoft.com/kb/214019
 
=IF(OR(MOD(A1,400)=0,AND(MOD(A1,4)=0,MOD(A1,100)<>0)),"Leap Year", "NOT a Leap Year")
If you are always entering entire fiscal years, then you just need to use this formula to reference the year of the end date. Supposing your start date, 1st July 2011, is in cell A1, and your end date, 30th June 2012 is in cell A2, you would change the formula as follows:
Code:
=IF(OR(MOD(YEAR(A2),400)=0,AND(MOD(YEAR(A2),4)=0,MOD(YEAR(A2),100)<>0)),"Leap Year", "")
If you want to be able to enter any set of dates, which may or may not span multiple years, then it is possible but the formula will become considerably more complicated.
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Old 09-11-2011, 04:58 PM
USAOz USAOz is offline Formula to calculate Leap Year Windows 7 32bit Formula to calculate Leap Year Office 2010 32bit
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Formula to calculate Leap Year
 
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Thank you VERY much - you're a legend!
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