In the link I provided you, look at the section here:
dA[x++] = "00000101 New Year";
in that script, 0000 (no year) means it happens every year.
its YYYYMMDD.
i.e.
dA[x++] = "20070515 big.nerd apreciation day";
This would make the 15th of May, 2007 the big.nerd apreciation day!
(new holiday, perhaps?)
Good Luck