title: Legacy system and dates- what date is '733473'
body: <p>I am working with a legacy system whereby it seems they store dates as integers, such as 733473. Anyone seen this format before and can think of the logic to turn this into a date? It appears to be a day number, but not sure how many days from what date!</p>
  
  <p>Edit: the value I get for 01/01/2013 is 734869. It is the amount of days since 0 i believe, but does this have a name? I need to write/find a native function in MSSQL server to convert these.</p>