Hindus,Jains,Sikhs,and some Buddhists (notably Newar Buddhists) observe Diwali festival . On Amavasya of Kartik month,(Date varies per Hindu calendar), Diwali is celebrated . Deepavali is also called Diwali . The festival involves celebrating Diya and lighting,home decoration,shopping,fireworks,puja (worship ceremonies),gifts,performing religious rituals,feast and sweets . Galungan,Diwali (Jainism),Bandi Chhor Divas,Tihar,Swanti,Sohrai,Bandna is related to Diwali . The 2019 date of the festival was 25th (Dhanteras),27th (Naraka Chaturdashi) and (Lakshmi Puja/Kali Puja),28th (Govardhan Puja/Balipratipada),29th (Bhai Dooj) . Diwali is of Cultural,seasonal,religious type
Diwali is celebrated by more than 2 groups