Pradosha vrata is a Hindu vrata for the worship of Lord Shiva and Parvati. The Pradosha worship is done in the evening twilight or sandhya kala on the Trayodashi of both lunar fortnights (Shukla and Krishna Paksha). These are the 13th tithi, or lunar days, from the New Moon (Amavasya) and Full Moon (Poornima).Maha Pradhosh is the Pradosha which falls before or on Maha Sivarathri in the month of Maagha in traditional.It is believed that worshipping Lord Shiva at Pradosh day will relieve from sins and gives Moksha. Among the poojas performed by the devotees of Lord Shiva, the Pradosha puja is considered to be more auspicious. It is believed that during Pradosha period all the universal beings and Gods come down to earth and attend the worship. The importance of observing Pradosha is described in Pradosha Mahatmyam from Shiva Purana and hence Shiva devotees observe Pradosha Pooja with high sanctity. Pradosha indicates the meeting of the Sun and the Moon in a horizontal line during their movement on their Axis.
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