The only religious event you must celebrate for God is the harvest festival where you have a large banquet of your harvest; invite friends, family, neighbours and servants. Donate food to the poor and elderly.
Young women should provide naked dancing as entertainment and you should have sex with non believing women, your wives and servants that you invite. Children should be kept away from the adults time and taught about the four horsemen.
Other religious events such as Christmas, eid, Easter etc don’t have to be celebrated anymore as the prophets turn on earth has ended but you can if you like to keep with family traditions.