Time check doesn't work

import time

quietStart = 23
quietEnd = 9

def nightCheck():
    currentHour = int(time.strftime('%H'))
    if quietEnd > quietStart:
        if quietStart > currentHour and quietEnd < currentHour:
            return(True)
        else:
            return(False)
    elif quietEnd < quietStart:
        if quietStart >= currentHour and quietEnd > currentHour:
            return(True)
        else:
            return(False)
nightMode = nightCheck()

print(nightMode)