Karva Chauth 2011 as per Hindu calendar - India Standard Time. Karva chauth 2011 date is October 15. Karva Chauth is an annual fasting undertaken by women in North India on the fourth day of Kartik Month, as per North Indian Hindu lunar calendar. Karva Chauth Vrat (also known as Kadva Choth) is observed by women for a happy and prosperous married life and for the well being of the husband and is one of the most popular fast and ritual in North India. Karva chauth is dedicated to Lord Shiva and Goddess Parvati. It is believed that Goddess Parvathi had observed severe penance to get Lord Shiva as her husband.