It is also known as Navaratri/Navaratra meaning nine divine nights. Actually this festival is celebrated for ten days. The important days are Panchami(5th day), Sashti(6th day), Saptami(7th day), Ashtami(8th day, Navami(9th day) and Dasami(10th day). Those who cannot celebrate or pray from the first day can at least do so the last three days. The tenth day is also known as Vijaya(winning or triumph) Dasami(tenth day) celebrating destruction of the Demon Mahishasura by Goddess Durga. That is why she is also know as Mahishasura Mardhini (killer/destroyer). It is celebrated as triumph of good over bad or evil.
The inference drawn here is that women, who are known for their gentle nature, love, compassion, beauty, and who as daughters, sisters, wives and mothers make this world a beautiful place and are the reason for very existence of this world, when needed can and do have the strength and will power to turn into Kali and destroy the evils or obstacles. One should not think that women are weak and helpless. Don't you all agree with me. Its a proven fact. How many times we women have boldly faced so many difficult situations in our lives and helped our men folk out to weather the storms? We are much stronger emotionally though may not be much physically.
This is a poster of Kali.