Pradosh is a highly auspicious day dedicated to Lord Shiva on the 13th day of every lunar fortnight in traditional Hindu calendar. The date of Pradosh in September 2017 are September 3, 2017 and September 17, 2017. Shiva devotees undertake a fasting from sunrise to sunset on the Pradosh day. The Pradosha puja is performed during the twilight period.
Pradosh as the name indicates is a period just before sunset and after sunset. The period is between 1.5 hours before sunset and 1 hour after sunset.
Some people only observe fasting on anyone Pradosh day in a month. There are staunch Shiva devotees who observe fast on the both the days in a month.
Special pujas are performed in Shiva temples during the period. It is said that Lord Shiva and Parvati are in a happy mood during Pradosh period and they shower blessings on devotees.
You may also like to read