Rebels Spoilers:
It just occurred to me that Ahsoka should technically be a year or two younger than her birth-date would suggest considering the whole world-between-worlds thing in Rebels where she essentially skips ahead in time. Not that this is particularly important, but I figured I’d mention it.
Rebels Spoilers:
She actually only skipped minutes of time. When she was pulled out of that moment the clock kept running on that portal so when she returns through it she’s back on Malachor but only minutes have passed. Which is why we see her limping away back into the temple at the end of Twilight of the Apprentice. That’s the her that just returned from the world between worlds.