Respuesta :

we know that
The Sun makes a complete circle in the sky approximately every 24 hours, while the stars make a complete circle in the sky in 4 minutes less time, or 23 hours and 56 minutes

Sirius is a star
so
If Sirius rises at 8:00 pm tonight
then
tomorrow 
will it rise  at ------> 8:00 pm -4 minutes----> 7:56 pm

the answer is
7:56 pm