I think so it is in midsummer.
Which IMHO would be quite unthematic for Niefelheim i.e.... "
Faster! We much rush to that particular little province in control of our mortal enemy instead of his capital, because we need to be there in 2 months so our god will receive the necessary blessing of the holy August holidays..." mmmh
What I mean is, as KO as expert of religions knows better than me
, in almost every culture the periods around the solstices and equinoxes are somehow sacred and important; but Dom3's nations' cultures are too diversified to put the "important holy period of the year" (to gather VPs - the "summer rituals" you suggested
) in the same season for everyone, seems hard to rationalize, as for Niefel or LA Ermor it would imho logically be winter and spring for Pangaea and so on, a thing that one wouldn't care in a normal game but might become weird in this one were we're expecting everybody to write the thoughts of maybe twenty different nations...
And also I think it is impossible to make it diversified for nations so I would suggest something simpler like the necessity of the contemporaneous control of such and such an amount of "holy stones" or whatever.
(Stream of consciousness anyone?
)