Cream Cheese expiration dates
What country are you in? Is this Philadelphia Brand Cream Cheese? Is the package unopened? Does it have a Julian date on the package? Has it always been refrigerated? 

As a very general rule, you can safely use unopened, always properly refrigerated cream cheese from a reputable source for 1 month past the sell-by date (this from Still Tasty and other reputable sources). In the US, packages that have a date are supposed to also specify whether that date is a "use-by", "sell-by" or "best-by" date. Eggs are an exception.

Personally, I have used unopened cream cheese far beyond 1 month past the date on the package, but as far as that goes, it's your call. Use your common sense, assess your risk, and make a call for which you are ultimately responsible. No responsible person can tell you that unopened cream cheese is really good for 6 months past the date on the package, because that would make that person responsible if your cream cheese is an exception.