Leapin' lizards
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Right. 2/29/1900 is <i>not</i> a legal date. This regex assumes <i>any</i>
year evenly divisible by four is a leap year. But century years are leap 
years only when they're divisible by 400.<br>
<br>
Good regexes can be used over and over. For more examples of useful 
regexes, see the <a href="/code/regex">listing</a> in the <a 
href="/code">Code</a> section of this site.
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