giorno e notte

Literally, “day and night”.

giorno e notte

1. day and night; unceasingly
   • 2019, George Orwell, translated by Nicola Gardini, Nineteen Eighty-Four, Mondadori:

     Ti spiavano giorno e notte, ma se non perdevi la testa, li potevi pur sempre fregare.

     They could spy upon you night and day, but if you kept your head you could still outwit them.

     (literally, “They spied on you day and night, but if you didn't lose your head, you could always fool them.”)