@Pagan  
But, like someone already pointed out, the sun stays in place for most of the movie, so yah.

So after actually watching the movie my theory is this, the Princess’s are still linked to the sun and moon because their magic is still being used and harnessed in the movie, meaning it’s not actually being blocked it just can’t be controlled without the staff, so their magic is still moving the sun and moon through the link in magic at least until the storm king takes it for himself.
 
An overcomplicated theory for what is likely just an oversite but eh.

my head canon is that princess celestia and princess luna raise the sun and moon, respectively, but only in equestria. once you start getting past equestria’s borders, things start getting weird, and eventually astronomical bodies move themselves, or don’t move at all, or someone else governs their motion. it could be day in griffinstone and night in equestria.

Jet fuel can’t melt the moon! Wake up, people!

Finally, we can all see it.

@Background Pony #FA96  
Tempest was given three days to get Twilight
 
So I’d say that all of the adventure happened within no less than three days

@The Toaster Repair Pony  
Aw come one, I’d say they do care about them

@MrNitpick  
It’s all the same planet. Looking at it now, it seems like maybe the lighting just changes based on weather, and then later on the Storm King is able to use the stolen Princess Magic to move the sun and moon, when they hadn’t been moving.

Maybe the Sun and Moon work differently outside of Equestria?

@Background Pony #4B67  

@immblueversion  
True. I kind of forgot that. No wonder why it was hard to determine how long it took for them to complete their quest.

@Binkyt11  
LIES!! FAKE NEWS!!

@Binkyt11  
Also that.

@Background Pony #FA96  
I actually noticed the same thing. They sail through some dark clouds with the pirates, and there are those gorgeous sunbeams shining on Mount Aris.

UH OH

@The Toaster Repair Pony  
Not pointless, but rather not mandatory. I mean, the keys in Breath of Fire are useful enough to cause conflicts in order to own them. I mean, if you control night and day, you control weather, and if you control weather, or part of it, you pretty much control all agriculture, all daily life. If they want to, they can scorch earth by keeping the sun up for long enough for the hea to build up, or keep night going until plants die of starvation.
 
That is why Nightmare Moon was too dangerous.

@raakamagna  
Except we’ve seen that when they can’t get access to the ability of moving them without someone to do it for them like Twi, the moon and sun are in the sky at the same time, we saw that in season 4.

I’ve honestly always thought about it like this: The sun and moon move normally but need to be “pushed” with magic every so often (likely each day, given Luna and Celestia’s jobs) to keep them going or they will slowly stop. I honestly think that is the best explanation for any inconsistencies with that.

@raakamagna  
In other words, they’re completely pointless

Ever played Breath of Fire? There are artifacts that change day to night and vice versa, but without them the cycles go on their own. Celestia and Luna have been controlling day and night cycles not because the world would stop doing so int heir absence, but because it benefits the ponies.

I ment movie.

Does it actually move from day to night within the movie during their being turned to stone?
 
I checked all the screencaps, and all the non-daylight scenes are due to weather or environment. None of them have the blue lighting from the actual night scenes.
 
And if you want to argue about the whole movie happening within a day, of corse it will happen in a day if its stuck in day for (days, weeks, years, ex.) the whole movie.

 
In truth, after that whole Tirek debacle, they had backup generators installed.