I'm a night owl, and, honestly, I have been suffering from insomnia since childhood, so
Asra - Arabic "travel at night"
Isra - "nocturnal journey" in Arabic
Lunlumo - "moon light" in Esperanto
Or just
Layla "night".
Lilith - "of the night"
Nox and
Nyx - "night" in latin & greek.
Realistically,
Layla,
Lilith or
Luna, I guess.