Excel dates

Earl Takasaki · Aug 10, 2003

My versions of Excel (2002 and 2003) should that 2/29/1900 exists.
However, 1900 was NOT a leap year. Is this a bug?

Dave Peterson · Aug 10, 2003

The story is that it was a bug in one of the early versions of Lotus 123. When
excel was developed, they decided to have the same bug.

My guess is that would make it easier to convert from Lotus 123 to Excel. I
would think that if MS didn't duplicate this error, then there would be some
people who wouldn't convert.

Debra Dalgleish · Aug 10, 2003

Here's a link to the MSKB article with the story:

XL: Excel Incorrectly Assumes 1900 Is a Leap Year
http://support.microsoft.com/?id=181370

Excel dates

Earl Takasaki

Dave Peterson

Debra Dalgleish