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Asked: 2026-05-16T17:28:11+00:00

In an Excel sheet I will receive the data, which in turn I need

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In an Excel sheet I will receive the data, which in turn I need to upload it to SQL server and then implement the logic.

I have received a date field --[Due Date] as number ex: -.40317. In Excel if you right click it and then format it to a date. It will show the correct date as 19.05.2010.

So after uploading the file as it is. I have used,

SELECT (dateAdd(day,[Due Date],'1900-01-01')) FROM table1.

Assuming that Excel counts the days from 01-01-1900. So I am adding the number --[Due Date] Which should give me the proper formatted date..

But this returns me a value of 2010-05-21 00:00:00.000.

Can you please help me whether by assumption that Excel counts from 01-01-1900 is wrong, or the procedure that I have used is wrong to give such a value.

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  1. Editorial Team

    I asked a similar question a while ago – it wasn’t talking about Excel but VB6, hence I’m not suggesting this question is a duplicate. However, the answer I think is the same.

    Date 0 in SQL is 01/01/1900.
    Date 0 in VB6 is 30/12/1899, 2 days earlier – that explains the difference.

    So I believe Excel to be the same.

    In Excel, I entered 0 in a cell and formatted the cell as a date – which displayed (weirdly IMO) 0/1/1900. I’ve had a quick look to find another reference that answers this definitively, but haven’t managed to find one.

    Edit:
    Pulling in links that were given to me in my question (that do relate to Excel):
    http://www.ozgrid.com/forum/showthread.php?t=46561
    http://www.joelonsoftware.com/items/2006/06/16.html

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