Ladies and Gentlemen and Others, may I present: the finalized calendar for Camp Cretaceous (Summer Edition).
I mapped out day changes, read the books, cross-referenced with Chaos Theory, and did a lot of meticulous examination...and this works.
Note: the labels are tagged with their simplest and most memorable events. The events in Yellow are Anchor Dates--they're the ones that have Actual Evidence In-Canon supporting them. Details below!
Obviously, "The Long Run" gets factored in because of the full moon. The full moon would presumably rile up Scorpios Rex and trigger its hunting spree; it provides Yaz, Darius, and Ben with ample light to run...however, that does provide the date with a five-day variance--an "almost-full" moon could easily be illustrated by a full moon. No problems...but that's where the next night appears:
The movie Fallen Kingdom premiered in the USA on June 22, 2018--but, of course, evening showings would have dropped on June 21st. That means that everyone watching the movie before midnight would be watching on June 21st. It's just more fun if the prologue takes place exactly two years before the movie's premiere...and it makes sense!
Now, on to the third anchor date: the Yasammy kiss and the final battle all take place on the same day (the kids were BUSY), but that's also the date that Darius rescued Brooklynn from poisonous gas and was reminded that he's a good leader. Here is where we see two factors:
Sammy's first kiss taking place on a Tuesday would, naturally, give it an unfair rise in the rankings. Their access to a tablet over the past two weeks would have also made them fully aware of exactly what day of the week it was...thus bringing us to Exhibit B:
...Darius called Brooklynn on July 12th. It's easy to imagine Darius having that day burned into his brain (it's Yasammy's Anniversary!), and, of course, he could call Brooklynn with his Guilt on that day. There's also a gap of almost two weeks between calls--despite everything, it's too happy...or too sad...of a time. That kid had a rough time...or maybe he was Actually Spending Time With Mom!
The most nebulous time is the period where Darius was captured, but the novel (which is based on the script) makes a specific note that:
A. Kash worked on the chips for several days
B. Darius was checking in with his friends "every other night"
C. It was about a full week.
Using that math, notice that there are two successful update nights where Darius reported on-time, and that his interrupted meeting was toward the end of a week, while also falling into the category of "several days".
Other significant date notes:
-Dodgson slipped out to Isla Nublar on a Sunday
-Daniel Kon was called away on the Fourth of July
-The investors were supposed to be away for a long weekend. Demo on Friday, deals pushed on Saturday, everyone goes home on Sunday, they're back to their jobs on Monday without any suspicion or fuss.
