Nope, you can't have a 30-day February specifically because the construct actually looks like:

if ((($year % 4) = 0)  && (($year % 100) != 0)) { 
    $feb += 1; 
} #leap year
elsif (($year % 400) = 0) { 
    $feb +=1; 
} #leap century
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So, since a regular "leap year" doesn't occur at the end of a century, the two conditions are never simultaneously satisfied.

Spud Zeppelin * spud@spudzeppelin.com