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Update 03-dates-as-data.md to update link to Microsoft's explanation of Excel dates #171

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kylamj merged 1 commit into from
Sep 18, 2025
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Update 03-dates-as-data.md to update link to Microsoft's explanation of Excel dates #171

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Expand Up @@ -109,7 +109,7 @@ from before and after this date, Excel will translate only the post-1900 dates i
If you're working with historic data, be extremely careful with your dates!

Excel also entertains a second date system, the 1904 date system, as the default in Excel for Macintosh. This system will assign a
different serial number than the [1900 date system](https://support.microsoft.com/en-us/help/214330/differences-between-the-1900-and-the-1904-date-system-in-excel). Because of this,
different serial number than the [1900 date system](https://support.microsoft.com/en-us/office/date-systems-in-excel-e7fe7167-48a9-4b96-bb53-5612a800b487). Because of this,
[dates must be checked for accuracy when exporting data from Excel](https://uc3.cdlib.org/2014/04/09/abandon-all-hope-ye-who-enter-dates-in-excel/) (look for dates that are about 4 years off).


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