Can I set up new events with leaps?

Question

I've tried to set up some Maya calendars on iCal without success. My idea has been creating a group of calendars made up by "full day" events, in which every event represents a day, and every calendar, a count. The point is that in those calendars there are always leaps that are repeated every while, and as far as I've done, after a leap happens, I must re-start to create the same events. Am I clear?
Let's make an example. Imaging a calendar made up by four days (too short, but its for the example). I have created an iCal calendar with four events, and each one is set up to be repeated every four days; till this point it works as desired. But there's a leap of one day that happens every year, and I haven't been able to set it up; after erasing the event of that day, I must re-start to set up the future (four, for this example) events... Can't I set events with leaps on iCal?
I've also thought about another possible way to set a calendar like that. I found a table for finding out the correspondence between Gregorian calendar and a 260 days Maya Calendar, by making an adding. There's a number for each month of the year, and also every year has a number. You have to add the number of the month plus the number of the year plus the number of the day of the month, and only if it is higher than 260, you will need to subtract 260; thus you will know which of those 260 days is today (or another date).
So, if I can set an iCal calendar using something like "if today is 2nd =2, of June =151,  2011 = 7; add 2+151+7; and if answer is higher than 260 subtract 260; so day number is 160". I could also set some other calendars from that one, like "if answer is 109 or 110 or 111 or 112, then "codon" number is X. Any suggestion for creating an iCal calendar like that from other way, like Developer Apps? Or if not for creating an iCal Calendar, maybe for making a Widget?
Thanks for your attention.

Answer 1

Am I not clear? I guess I got excited trying to be clear explaining details... But got dark!
And if I just say, Can I create an iCal Calendar event, set up to be repeated every monday, but after a specific date, be repeated weekly every tuesday? If not on iCal, another advice?
Thanks in advance!