Good catch Miguelito..... Perhaps Starwood should consider rewarding you with a few stay credits... or else a few bonus points...?
I hope they contact everyone who may have booked a hotel room from this calendar to verify the correct dates.
The incorrect calendar also had only 29 days in November, so that the month did end on the right day of the week and presumably the December calendar was correct all along.
I want to stay on the second 4th of the month. Should I call the hotel directly? And does the 4th have a weekend or weekday rate?