All is explained here as this doesn't happen instantly:
https://www.sky.com/help/articles/switching-to-sky-mobile-keep-your-number
If you give us your switching code (PAC) before 6pm Monday - Friday, we'll transfer your number to Sky Mobile by 5pm the next working day.
So as you gave Sky the Pac at 7pm, this will be the same as if you gave them it tomorrow so it might not changeover until sometime on Friday.
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