I guess you mean the movable winter holidays for primary (podstawowe) and secondary (gimnazjum + liceum) schools (universities make their holidays regardless of the schedule for those schools, so no calendar by region)
Slaskie (Katowice)
12 do 27 stycznia (12 - 27 Jan)
Malopolskie (Krakow)
26 stycznia do 10 lutego (26 Jan - 10 Feb)
full info (in Polish) here:
wiadomosci24.pl/artykul/juz_niedlugo_ferie_zimowe_w_szkolach_54385.html