What means to say happy Diwali in English?

Happy Diwali itself in English, is a welcome address to any acquaintance on the day of Diwali.In fact Diwali is the Festival of Light,celebrating Goddess Kali who (as per Hindu Scripture) removes all darkness from the lives of the devotees.By wishing happy Diwali to anybody, one wishes that the life the person addressed is filled with happiness and joy.