trasnochador znamená v Angličtina

nocturnal▼(primarily active during the night)
adjective
[UK: nɒk.ˈtɜːn.l̩] [US: nakˈtɝː.nl̩]

night owl [night owls]▼(one who is awake at night)
noun
[UK: naɪt aʊl] [US: ˈnaɪt ˈaʊl]