Factual error: The mall robbery happens on July 1st, as shown on the newspaper clipping Diana finds, which is coherent with the events depicted in the movie (they rob the mall on the 1st, the day after the stone is at the Smithsonian and Diana and Barbara bond over dinner, then on the 3rd Maxwell arrives, grabs the stone at the evening party, and he is already super powerful the afternoon he takes off for Cairo). Problem is, July the 1st was a Sunday, and not just the mall, but pretty much any other store downtown is open, and similarly since it's the 4th, financial operations wouldn't be happening (although in this case you could always argue that we deal with wishes - but it's an extra layer of implausibility). (01:04:05)
Wonder Woman 1984 (2020)
21 factual errors
Directed by: Patty Jenkins
Starring: Chris Pine, Robin Wright, Gal Gadot, Pedro Pascal
Factual error: When Diana first brings Steve into the DC Metro, the modern-day signage visible inside L'Enfant Plaza Station is not era-appropriate to 1984. It includes markers for the Green Line (opened in 1991) and Silver Line (opened in 2014), and all markers are shown with printed abbreviations, which were not added until the Silver Line opened. (00:57:49)
Diana Prince: Nothing good is born from lies. And greatness is not what you think.
More trivia for Wonder Woman 1984
Question: How did Antiope know Diana cheated? Why allow her to compete in this contest if she wasn't allowed to train, at first, in the previous movie?
Answer: In the first movie, Diana was much younger and unready to start combat training. In the second movie, the flashback scene takes place some years after that, and Diana has since grown and been in training. During the competition, there were observers along the entire course to ensure that everyone followed the rules, attended to any mishaps, etc. If anyone cheated or failed to complete the required tasks, it would immediately be reported to Antiope.
Answer: The competitors had to light up the cloth banner beacons using their bows and arrows. Diana finished the course but missed one blue beacon by taking the cave shortcut, so the general grabs her and disqualifies her.