30? Heck, it's up to 90 days now. Stores in my area were setting out Christmas stuff in September. But now it's all transforming into Valentine's Day stuff.
Sounds like you live in a backward area. Here, Valentines stuff started hitting the shelves 2-4 weeks before Christmas, filling the space where the cheesier Christmas crap had sold out.
Today, I received emailed photos from my indignant niece in England, showing me Easter candy already in the stores. Easter is just over 4 MONTHS away!