In Alien Fiction, the answer is problematic. The characters are traveling at speeds which cause events to pass at different paces on their ships than outside. They have a method of marking coordinates in both time and space together in four dimensions because of how their ships move. I'll oversimplify and say it's a few days from the protagonist's point of view.
In Alien Fiction: The Queen in Yellow, 3 days.
In Soulless Saint -- which is not yet complete -- maybe a week total.
In my NaNoWriMo project, Fyberpunk, I don't know yet.
These are all novellas.