Fall marks one of the largest Hindu high holidays – the Festival of Lights.
Diwali is a celebration of light over darkness and good triumphing over evil. The holiday is also celebrated by Sikhs, Jains, and some Buddhist communities as well.

Read more about the importance of Diwali here

The significance of Dipavali is a re-enacting of this banishing darkness from within yourself, of shaking yourself free from the sleep of ignorance, and waking up into the light of a new dawn of full awareness…And to remind you of this, each year the festival of lights is held during the darkest night. It comes as an annual reminder of what you have to do—banish darkness, bring in light, be full of light and revel in the Illumination. Fill yourself with the Light. Fill the whole world with light by your own being in it.

– Sri Swami Chidananda