I'm trying to keep up with four shows in the Arrowverse: Supergirl, The Flash, DC's Legends of Tomorrow, and Arrow. In past years, the air dates of Supergirl were a month or so after all the other shows had already started and it was confusing.
In October 2017, Supergirl Season 03 Episode 01, The Flash Season 04 Episode 01, DC's Legends of Tomorrow Season 03 Episode 01, and Arrow Season 06 Episode 01 ALL aired the same week, one day after another. So the viewing order obviously follows the air dates.
So I concluded that the correct watch order for 2017, on into 2018 is as follows:
- The Flash
- DC's Legends of Tomorrow
Then I came upon Supergirl Crisis on Earth X, part 1. I watched it, and decided to watch part 2. So I started watching The Flash, Season 04 Episode 08, only to find that it was listed as Part 3?!
I was confused and now I'm trying to find the correct watch order. What other episodes have I watched out of order? Did they air a 4 part series in the incorrect order? Something obviously happened, and I guess I just want to know how I can confidently watch these shows in the correct order (beyond crossovers that clearly label the watch order). If I was watching them when they actually aired, it wouldn't matter. Because if one episode skipped a week, I wouldn't be lost/confused. But since I don't watch them when they air, I don't really know how to make sure that I'm still watching them in the correct order.
Is there a simple way to make sure I'm still watching these in the correct order? The only other way I can think is to look up an episode guide for EACH show, and check the air dates/episode numbers to make sure I'm still watching them in the right order.