The Hungarian word for day is
nappal

Translations for day and their definitions

Nap	©
1. n. the Sun
A Nap a Naprendszer legnagyobb égiteste. - The Sun is the largest celestial body of the Solar System.
2. n. day
Egy hét hét napból áll. - A week consists of seven days.
3. n. sun (also written Nap in astronomical context), (in compounds) solar
Süt a nap. - The sun is shining.
napszél - solar wind
naprendszer - solar system
4. adv. (following certain adjectives) on the specified (kind or number of) day(s)
minden áldott nap - (on) every single day
Egész nap ott voltunk. - We were there (on) the whole day.
Egyik nap ezt akarja, (a) másik nap meg azt. - S/he wants one thing on some days and another (thing) on other days.
Egy nap úgy döntött, elég volt. - (On) some day s/he decided enough was enough.