Corrected entry: Near the end of the movie, Tom calls Summer by her real name Zooey.
500 Days of Summer (2009)
1 corrected entry
Directed by: Marc Webb
Starring: Joseph Gordon-Levitt, Zooey Deschanel, Chloe Grace Moretz, Clark Gregg
Continuity mistake: Tom receives an e-mail from Summer on day (303). At the beginning of the movie we are told that Tom and Summer met on January 8, so day 303 should be November the 6th, but the e-mail says that it was sent on May 7th, which is day 120.
Correction: I have seen this movie a million times and have looked for the spot where you point this out. Please put a time signature to make your mistake easier to spot.