The Hindu lunar calendar has 12 months, each divided into two fortnights. The waning phase of the moon or Krishna Paksh ends with Amavasya, while the waxing phase or the Shukla Paksh ends with Purnima tithi on the 15th day. An Amavasya tithi falling on a Monday has its own significance as the day is dedicated to Lord Shiva. Somvati …