My bad I should have worded that better, but I mean from Scariff to the end of ANH. At most it's like a 5 day span right?
A New Hope is maybe 4 days? From the beginning until R2 gets captured (sunset), then until the twin suns (sunset), then until Luke joins Ben to become his padawan (Weapon of a Jedi clarifies that Ben taught Luke some meditation practices that night before they went to Mos Eisley the next day), then the rest is all one day unless there's another day preparing for the battle.
Depends on how long it takes Vader to hunt the Tantive IV.