Diwali and Bonfire Night. The former is the Hindu Festival of Lights. The latter, a celebration of the failure of a 400 year old terrorist plot in the UK.
Both in essence signify the victory of good over evil. Both are celebrated with lights and fireworks.
The primary celebratory decoration for Diwali is lights. The words means rows of lamps and is traditionally celebrated by decorating the house and surroundings with row upon row of oil lamps.