Praise be to Allaah.
There is no doubt that what is mentioned of celebrations is haraam, because it is an imitation of the kuffaar. It is well known that the Muslims do not have any festival apart from Eid al-Fitr and Eid al-Adha, and the weekly “Eid” which is Friday (Yawm al-Jumu‘ah). Celebrating any other festival is not allowed and is either of two things: either it is an innovation (bid‘ah), if it is celebrated as a means of drawing close to Allah, such as celebrating the Prophet’s Birthday (Mawlid); or it is an imitation of the kuffaar, if it is celebrated as a tradition and not as an act of worship, because introducing innovated festivals is the action of the people of the Book who we are commanded to differ from. So how about if it is a celebration of one of their actual festivals?