Diwali is one of the oldest Hindu festivals observed in the Kartika month of Hindu calendar at no moon i.e. on Amavasya ( in between second half of October to first half of November). The main reason behind the celebration of Diwali is to enlighten each and every corners and to remove all the evil darkness from the world.
Being the oldest and most popular festival, Diwali got so much importance than any other festival of Hinduism. Being such an important festival, Diwali has some mythological values and there is official holiday on Diwali in many countries like India, Fiji, Pakistan, Guyana, Malaysia, Myanmar, Singapore, Sri Lanka and many other countries.
Diwali is well known by many other names like Deepavali, Deepotsava etc. in different regions of India and in other countries and also known by Festival of Lights in some countries. There are lots of stories behind the origin of Diwali, as the great celebration and the festival of lights is narrated many times in many Hindu texts scriptures and Ancient Puranas. But in all the stories great festival of lights was referred as a symbol for victory of Light over Dark, Wisdom over Ignorance, Truth over Miscreant, Good over bad, Prospect over Discouragement, victory of Morality over Sin.
Not even Hindu but Jain, Sikhs, Buddhist people also celebrate Diwali not only for Ramayana but for many other reasons. No matter what people are poor or rich, we all celebrate it with full enthusiasm or pleasure.
Diwali is not a single day celebration, the are lots of other festival around Diwali, the festival season starts with the Navratra 9 day Festival. Diwali is actually around a five day celebration, it may varies region-wise. People share their happiness, joy with their loved ones in Diwali festival season and relish the joy of Traditions, Enlightenment, Rituals, togetherness and delicious sweets, exciting gifts uncountable decors, numerous emotions and lots of candles and earthen lamps to decorate not only their surrounding but into their hearts too. All the festivals falling in the month of October and November bring bundles of Joy and happiness to everyone regardless of any reason, religion or region.