Mumbai, Jan 12 (ANI): Bollywood actors in Mumbai have started celebrating the harvest festival, ‘Lohri’, which is observed on the 13th day of January every year to mark the winter solstice day. Veteran Bollywood actors, Rakesh Roshan and Jeetendra, participated in the celebrations, organised by the Punjabi Cultural Heritage Board. Actors Ranjit, and Kuljeet Randhawa, also took part in the festivities. Bonfires, dance, music and offering of sweets, crisp rice and popcorn prepared on the bonfire form an integral part of celebrations.