結果 is "as a result" or "consequence", 外の暦 is "outside/different calendar".
The text is too small for me to read, but my wild-assed guess is she's talking about how the exact date for when Christmas is supposed to be has been lost because of using various different calendars over the years.
No. 5 ChristmasterU-n...What is it, Yukari?That's right! We should be copulating at those times! Copulating!Super Tenko RanI don't care about that!That's right... I didn't even need you to tell me that... That's right!Well, in the particuarly strongly Christian influenced countries of Italy, France, Spain, Christmas begins on December 25 of the Gregorian calendar (a solar calendar) and ends on January 6. The Catholics, a sect of Christianity, were holding Christmas festivals until just a few days ago, but we in Gensoukyou don't have don't have anything like that. Gensoukyou's festivals are what you might call dialectical, or perhaps-
suspicious-
a fundamental contradiction and the decay-Yukari-sama... that's filthy!!
