Budha Pradosham falls on Wednesday, 23rd December, 2015 (Sukla Trayodasi).
The Pradosham pooja is done in the Shiva temples. Many devotees in south india visit Shiva temples during pradosham timings and do poojas. People, who are unable to visit temples can chant Shiva mantras like Shiva Ashtottaram, Panchakshari mantra etc during this time. The benefit of doing pooja at this time is that, the devotees will be blessed with good knowledge, communication skills and wisdom.
Pradosha Puja Time: Pradosha pooja timings in Tamilnadu Shiva temples is between 16:30 – 20:00 (The timings for each state may vary slightly because of different Panchangas (almanacs). The general Pradosham timing is 3 hour period i.e. One and half hour before and after the sunset.