converting dates in excel from julian to calendar

I have reviewed many websites on this subject but none of the conversions are working.

I am trying to convert over 1000 Julian dates to calendar dates in excel 2010 spreadsheet please find sample attached.
Amanda WalshawBusiness Solutions AnalsystAsked:
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[ fanpages ]IT Services ConsultantCommented:
...please find sample attached.

Sorry, nothing is attached.
Amanda WalshawBusiness Solutions AnalsystAuthor Commented:
sorry I have now attached it thanks Amanda
David Johnson, CD, MVPOwnerCommented:
Which variant of the julian date are we referring to.. What is the gregorian date of julian date 0?

Is the start date January 1, 4713 BCE?
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Amanda WalshawBusiness Solutions AnalsystAuthor Commented:
hello the formula I use for impromptu is
(datetime-to-date(days-from-1900-to-datetime(date entered – 693595)))

so its 1900
Paul SauvéRetiredCommented:

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David Johnson, CD, MVPOwnerCommented:
not quite right Day 1 should be Jan 1, 1900 and you don't take into consideration of leap years.
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