Dwadashi, Sacred to Vishnu

Dwadashi is the twelfth tithi of the bright fortnight, a Bhadra or wholesome tithi in the fivefold grouping. Its presiding deity is Vishnu, here in the aspect of Hari, and the day is closely tied to the Ekadashi fast that precedes it: the fast is traditionally broken on Dwadashi at the proper hour, a moment called parana, so the two tithis are observed as a devotional pair. Certain Dwadashis carry their own weight, such as the day associated with Vishnu's waking from cosmic sleep. The waxing Moon is now close to full. In the panchanga Dwadashi is read as auspicious and is bound up with Vaishnava observance. These are the conventions of the calendar and its devotional tradition.

Parana, the ritual breaking of the Ekadashi fast on the following Dwadashi, is governed by its own timing rules distinct from the ordinary tithi boundary: classical sources specify a window after sunrise and before a certain fraction of the Dwadashi has elapsed, and breaking the fast too early or too late is held to diminish its merit, so Dwadashi's devotional significance is defined as much by this precise sub-tithi timing as by the day's fivefold classification. The specific Dwadashi marking Vishnu's awakening, Prabodhini or Devutthana Ekadashi's paired Dwadashi in the bright fortnight of Kartik, closes the four-month period of Chaturmasya, during which several classes of auspicious activity, including weddings, are traditionally deferred until Vishnu is considered to have woken from his cosmic sleep.