Yes, but decorated for all major holidays. Destiny is based in the distant future where they'd forgotten many things done in the past. There is NO reason that Destiny-specific holidays couldn't be made up. Even then, you could blend elements of religions for the holidays, claiming that the people of the City forgot what rituals went where. Essentially, you don't single out one path of holidays, and blend together rituals from coinciding events in different cultures and religions.