Some say that he invented November...
While there is no doubt that Android 4.2 is a hard working operating system, it appears that its Google designers did not think it deserved month of wind-downs.
When December comes along, many hit the pubs and clubs to celebrate and make a drunken pass at that person you fancied all year but did not have the courage to ask out. But it seems that Android 4.2 does not even acknowledge that the December exists and is cancelling Christmas, or more importantly Christmas parties for its users.
The problem appears in Google's flagship Nexus phone I its People app. All important dates that fall during the month of December will be ignored because, December doesn't exist. It's a universal Nexus problem and it effectively means that all the fun you were planning for next month will be cancelled.