Today, 25 November 2012 is Pradosh Vrat (Bhanu Pradosha Pujan). It is referred to as Bhanu Pradosh as it falls on Ravivara (Sunday).
This Pradosh falls on Shukla Paksha in Kartik Month as per all North Indian Hindi calendars and the Panchangams followed in Maharashtra, Gujarat, Andhra Pradesh & Karnataka.
This Shani Pradosh falls in Karthigai Masam in Tamil calendar and in Vrischikam Masam of Malayalam calendar.
Pradosh Puja time is 4.30 to 6’0 clock in the evening. Pradosha Astakam is an auspicious prayer chanted during Pradosh Shiv Pujan.
This Pradosh is even more auspicious as it falls on Ksheerabdhi Dwadasi. Tulsi Vivah is performed on this day.