Reply to post: Re: Sweet memories...

Scanning an Exchange server for a virus that spreads via email? What could go wrong?

katrinab Silver badge

Re: Sweet memories...

2000 was a leap year. 1900 and 2100 are not.

Most computers at the time assumed any year divisible by 4 is a leap year, when in fact years divisible by 100, but not divisible by 400 are not leap years.

Excel still thinks 29th February 1900 is a valid date, and most other spreadshhets copy this bug for compatibility.

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