[SPOILERS FOR DUNE: PART TWO]
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This is mostly a comment/question to anyone as invested in Timelines as I am.
First of all, the Timeline page for the Original novel states that it takes place starting in January of the year 10,191 AG, and then Book One and Book Two of the novel spread out until May of that year. Now, I find this complicated... It would mean that Paul and Lady Jessica were wandering the desert for about one and a half months before joining the Fremen, and I don't think that fits. I think it the first two Books of the novel may take place in March, and then Book Three, after the time-jump, definitely happens in late 10,193 AG.
Anyway, in Dune: Part Two there's no such time-jump, and it all happens in 10,191, and by the end of the film Lady Jessica is still pregnant. If she got pregnant by February 10,191, she would give birth in November of that year.
Now, the film starts with Princess Irulan logging her Imperial diary, and she says "Year 10191, third comment". She then logs the Battle for Arrakis and the Fall of House Atreides, meaning her logging it is soon after the events. Then, it seems some amount of time passes (as Paul becomes Fremen and is tested and they fight the Harkonnens), and later she logs her "Eighth comment". Does this mean she logs a "comment" for every month? March for the Fall of House Atreides and August for the "Reports of the new Reverend Mother spreading word the Lisan al Gaib"?
What do you think? Is it March and August of 10,191? If so, that would mean Dune: Part One takes place from January to March, and then Part Two starts in March, and there's a small time-jump to July-August. I have created a page for Timeline of the films, and have already started adding some information from the first film to it. I'd love for everyone to contribute to it and have more combined insight on this!