no 23rd dec is not holiday. But both movies are released as keeping festive season in mind. So, they are holiday releases acc me. See for eg: if the holiday is on Tue. There are two ways to release 1) on Tue 2) on weekend before tue. Recently many are following 2nd option becoz anyway weekend will be decent and on tue it will boost weekdays collection which will benefit lifetime. Following 1 option may give huge first day but film will be trending in lower level by the time of weekend which is not beneficial.This means they are releasing keeping forth coming holiday in mind. So, they are festive releases only. For both don2,jai ho holiday fell on sunday, which didnt give them huge extra benefit as others but u cant ignore they released in that period only.