Last name Poludnianyk

I have been searching for years and have been unable to find the origin of my father's last name POLUDNIANYK and the meaning of the name.

PO£UDNIANYK(?): At first glance one can see that the root of this name is polłudnie (the south or noon). So it might have meant the southerner or the noon guy. (The latter seems unlikely because the idea of shift work is a rather recent development). The -yk ending suggests its Ukrainian origin (Polish would probably be -ik).

The only surnames currently used in Poland incroproatign the połud- root are:
Połuda, Połudkiewicz, Południa, Południak, Południewski, Południk, Południkiewicz, Południok, Południowska, Południuk, Połudworanin, Połudziak and Połudzień. Południk also means meridian.