Durga Puja 1421 will start this year in September, 2014 and will end in the beginning of October, 2014. This year, Devi Durga will come on Cradle [Destroy] and will go back by Elephant [Agricultural Improvement]. The 5 days countdown for the Durga Puja will start with the Mahalaya, which will happen on 23rd September, 2014 [6th Ashwin, 1421].
Durga Puja is the festival of the worship of the Goddess Durga. Devi Durga is worshiped for 5 consecutive days of Navaratri, in the month of Ashwin in Bengali calendar. Devi Durga destroyed Mahishashura, the Buffalo Demon, after a 9 days long war. She killed Mahishashura with a spear, while her Lion bite him with full power. This very moment is made visible by making a sculpture every year. Then, the Goddess is invited within the sculpture with the help of Mantras. Then the puja begins and ends with the Visarjan of Devi Durga.
This year, in 1421, the Durga Puja will start with the Mahalaya on 23rd September, 2014.
The Panchami will start at 1:31 p.m. on 28th September and will end at 12:55 p.m. on 29th September.
Thus, every event will start on the previous day and end on the date written beside the event.
Sandhi Puja will start at 8:05 p.m. and end at 8:53 p.m. on the same date [2nd October, 2014]
HERE IS THE DURGA PUJA CALENDAR, 1421:
Note: All the timings provided here are according to the Bengali Calendar/Panjika.