HHC 2014 Programming Contest

[BruceH]

(09-24-2014 09:31 AM)Paul Dale Wrote:  I haven't checked all the myriad of Julian to Gregorian calendar changeovers over the years to see if any of these produced three odd days in a row or not and, if there are some, checked them for primality.

This is obviously possible and should be checked. However, I rather doubt the contest was meant to involve such nastinesses.

In 2011, Samoa skipped a day to jump from behind the International Date Line to be ahead of it (so as to be on the same date as their major trading partners). They did this by skipping December 30th, meaning they had three odd days in a row: 29th then 31st December 2011, followed by 1st January 2012. Fortunately for this competition, none of those dates are prime. :-)