yes...technically is not god...just a messenger for the god of harvest...but god of harvest gets the second day
I have the perfect festival inside my head, but it involves Slaanesh... And thousands of kinky / horny people... The 6th day, in the 6th month each year / every 6 years counting from the first year... But yeah, I don't think it will happen anytime soon.
Agreed. You know what would be awesome? Someone making Slaanesh a IRL god. Then they could do the festival. And, people could make the noise blaster thingies, and you could take it with you, as they are something you must have with you, as your religion mandates.