Brett says repairs will be at least 18 hours; Parker jacks up the estimate to 25.
The planet has a two hour rotation and the sun rises twenty minutes after they land; it's nighttime when they get back to the ship. The derelict is only two kilometers away, and sure bulky suits and rough terrain would make it take a while, but not that long. So it either took them a day to get in and out, or it took them just over an hour to get into the derelict, look around, and for Kane to get hugged.
Add delays in repairs for them to get Kane to the infirmary, for everyone to get out of their suits, and for the whole acid blood bit to take place. Maybe a half hour delay.
They end up taking off without full repairs, but knowing the slack nature of Parker it could easily have been closer to his 25 hour guesstimate than Brett's 18 hours - Deleted scenes show them lounging around drinking beer, with Brett getting the repairs wrong. Add a few hours for Kane to wake up and them to start eating.
Okay, maybe not over 24 hours, but a solid landing near 20. And even then, 15 hours is hardly as fast as people would like to make out and still goes against the whole 'Ah but facerape is faster thus fits better!' bullshit.