My Sims celebrate their holidays when I have enough time to play. I play with aging off and all the seasons set at 28 days per season. As a rotational player, this gives me some flexibility. Holidays that fall in certain seasons are celebrated during that season. But holidays in my home are a big deal, and crazy busy. I seldom have the opportunity to play my Sims let alone set up holidays for them to celebrate at the same time I am celebrating IRL. The one exception to this is I do decorate my Sim homes for Christmas even if they happen to be enjoying summer, fall or spring. I know it sounds a bit crazy, but it makes me feel as if they aren't being totally left out of my favorite time of the year. :D
