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Navratri is the Hindi Festival also called Durga Puja somewhere. It is the festival of Ma Durga which has many different form. It has nine form of Ma Durga.1. Shailputri
2.Brahmacharini
3.Chandraghanta
4.Kushmanda
5.Skandamata
6.Kathyayini
7.Kaalratri
8.Mahagauri
9.Siddhidaatri
Each and every form has particular name and mantra or meditation. If you want to listen the mantra in sanskrit, follow http://en.wikipedia.org/wiki/Durga
Navratri in 2012 dates
It starts from 16th October 2012 and ends in 24th October 2012 with Rawan Dahan.
15th October 2012(Monday) : Mahalaya Amawas
16th October 2012(Tuesday) : Navratri Begins
21st October 2012(Sunday) : Durga Pooja Begins
23rd October 2012(Tuesday) : Navratri Ends
24th October 2012(Wednesday) : Dusshera
Navratri is celebrated mainly in West Bengal, Bihar, Jharkhand, Gujarat, Orissa, Assam etc. Now Durga Puja is celebrated in USA, UK, Russia, Canada, Japan, where the Indain Community people used to live, they celebrate it from there itself and connected with their family too.
More will be updated soon..