Pradosh is a fasting dedicated to Hindu God Shiva and it is observed on the 13th day of the fortnight in a traditional Hindu Lunar Calendar. Pradosh February 2018 dates are February 13 (Tuesday) and February 27 (Tuesday).
The Pradosh period is in the evening from 1.5 hours before sunset and 1 hour after sunset. The fast which began at sunrise is broken during the period.
Most devotees make it a point to be present at a Shiva temple or offer prayers at home.