I am Muslim and I think I can give you some information. We don't celebrate Christmas but we celebrate New Year, they are two different things. We have 2 holidays as Eid al-Adha and Eid al-Fitr. After fasting for 1 month in Ramadan, we meet with our loved ones and celebrate this for 3 days. In Eid al-Adha, we thank "Allah" for the blessings he has given us and sacrifice an animal. This holiday lasts for 4 days. Both are very fun. Also, every Friday is a holy day and we have 3 blessed months. 🙂🙃 I hope I was able to introduce Islam a little.