Yah, I use the 21 day season mod myself. 14 days is too short but 28 days is way too long for my tastes. Though now that I'm rotating between households instead of playing just one I could see 28 days not feeling quite so long anymore.
I set it up so there is one holiday each week, except Christmas which gets 2 days. If I really wanted Love Day in Winter I could just remove Polar Bear Plunge and shift everything up 1, inserting some other holiday after Earth Day in spring.
Spring:
- Love Day
- Easter
- Earth Day
Summer:
- Remembrance Day
- Summerfest
- SummersEnd
Fall:
- Spooky Day
- Festival of the Arts
- HarvestFest
Winter:
- Polar Bear Plunge
- Christmas Eve and Christmas Day
- New Years Eve