How many days like that are there within a century?
The trick is in the word 'jubilee'.
There are many kinds of jubilee - Wikipedia lists at least 9 kinds. Probably at least one per year somewhere in the world.
blackjack
<a href="http://c.casalemedia.com/c?s=51816&f=3&id=0" target="_blank"><img src="http://as.casalemedia.com/s?s=51816&u=http://perplexus.info&f=3&id=0&if=0" width="120" height="600" border="0"></a>
flooble's webmaster puzzle
Thoughts
