Continuity mistake: When Ted is looking at Tami-Lynn's purchase invoices in the kitchen, and later looking at John's laptop, and looking at John's phone, he is not wearing reading glasses. When he's looking at his bills in bed, he is wearing reading glasses. (00:07:35 - 00:32:39)
Continuity mistake: When their car approaches the crosswalk in NYC, they are next to the sidewalk, and the street is filled with other vehicles passing them. Thirty seconds later, after the three Star Wars characters talk to them, there are no vehicles in the street, and it's full of people walking. (01:18:28 - 01:19:01)
Answer: Films are basically never set exactly when they're released. Most likely they just picked a random date around the likely time of release, but scheduling changed. Alternatively they just picked an arbitrary date in the future for the newspaper, but a date in the recent past would have worked just as well.