Julian Date to Leap and Perpetual

Mandalorean2356

New Member
Joined
Jun 6, 2021
Messages
1
Office Version
  1. 365
  2. 2016
Platform
  1. Windows
Any help would be great. I'm in the military and we use Julian dates to track alot of inventory. Each year we need audit our items and we do this by checking the Julian dates adding its shelf life by months and getting its due date. This is all done on scratch paper. I'm trying to create an Excel Sheet where I enter in the needed information. I enter in the Julian date add the months and get a calendar year in my total. I have managed to get a conversion from Julian to calendar in Excel using =("1/1/"&(IF(LEFT(A6,2)*1<20,20000,1900)+LEFT(A6,2)))+MOD(A6,1000)-1. My biggest hurddle is having Excel give the proper day. Every total comes out in a leap year and nothing in perpetual (non-leap years), It would be great if the formula knew when to give a leap year and a perpetual year. if anyone knows any formula which might help that would be great. *First Post*
 

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Dave Patton

Well-known Member
Joined
Feb 15, 2002
Messages
5,011
Office Version
  1. 365
  2. 2010
Platform
  1. Windows
Welcome to the forum.

Please provide some additional information.
- how are you defining Julian date?
- provide a few examples complete with expected results
- how is the Julian date created?
- what range of dates are you considering?

Some agencies apparently use the following:

T202106a.xlsm
ABCDE
46-Jun-2121157Current date to ~ Julian
5211576-Jun-21Text to Date
6211576-Jun-21Number to date
7
1a
Cell Formulas
RangeFormula
B4B4=TEXT(A4,"yy")&A4-DATE(YEAR(A4)-1,12,31)
B5:B6B5=DATE("20"&LEFT(A5,2),1,RIGHT(A5,3))


Cell Formulas
RangeFormula
B9:B12B9=TEXT(A9,"yy")&TEXT(A9-DATE(YEAR(A9)-1,12,31),"000")
C9:C12C9=DATE("20"&LEFT(B9,2),1,RIGHT(B9,3))
A10:A12A10=A9+1
 
Last edited:

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