The Democratic National Convention took place in Chicago from Monday, August 26 through Thursday, August 29. The peace platform was debated on Wednesday afternoon. As is usual at these things, the candidate’s acceptance speech closed out the show–Vice President Hubert Humphrey spoke on Thursday night.
I’ve got a timeline for the episode that requires the four days be consecutive. There are references to “tomorrow” and so on.
Day 1: The convention is on TV and Megan wants to know why they’re not debating the peace platform. Therefore, this is Monday or Tuesday evening, August 26 or 27. (Megan is packing Don’s bag for his trip to California–no one says it’s tomorrow, but logic dictates that they pack and talk about him being away the night before the trip.)
Day 2: Ginsberg, listening to the convention on the radio, is upset that the peace plank was voted down, making it Wednesday afternoon, August 28. Don and Roger fly to California. They arrive exhausted, and when Harry takes them to their hotel, he says he’s taking them to a party “tomorrow.”
Day 3: Don and Roger meet with Carnation executives. They mention that Humphrey’s acceptance speech was “last night.” Therefore, it’s Friday, August 30. What? Later on Day 3, they attend the party, so there’s no doubt about time passing since their arrival.
Day 4: Don and Roger arrive back in New York, and head straight to their offices. This cannot be Monday for several reasons: Don and Roger would have flown over the weekend, rested up at home, and come to work refreshed on Monday. Instead, they go straight to the office, luggage in hand. Second, if they’d had a weekend at home, they’d have already heard the good news about Chevy–the announcements made at the office on Day 4 only make sense if Don and Roger had no time to hear about them over the phone. Similarly, Bob Benson wouldn’t have waited the whole weekend before breaking the bad news about Manischewitz.
I’m going with historical goof. The peace plank vote was the 28th, Day 1 was Tuesday the 27th, and they arrive back in the office on Friday. Mentioning Humphrey’s acceptance speech was purely an error.