Karthika Somavaram Vratham (Mondays in Karthik Month) are highly auspicious as per Telugu panchangam and Kannada calendar. In 2020, Karthika Somavaram vratham dates are: November 16, November 23, November 30, December 7 and December 14.
Koti Somavaram in 2020 is – 21 November, Saturday.
In some areas, any day of Saptami which coincides with Shravana Nakshatra, before Kartik Purnima is also considered highly auspicious as Koti Somavaram and sometimes also referred to as Koti Somavaram.
In some parts of Gujarat and Maharashtra also, Karthika Somvar Vrata is observed with utmost gusto.
16 November 2020 – Karthika Somavaram – Koti Somavaram – Shukla Paksha Pratipada in Karthika Masam
23 November 2020 – Karthika Somavaram – Shukla Paksha Navami in Karthika Masam
30 November 2020 – Karthika Somavaram – Pournami in Karthika Masam
7 December 2020 – Karthika Somavaram – Krishna Paksha Saptami in Karthika Masam
14 December 2020 – Karthika Somavaram – Amavasya in Karthika Masam
As per the North Indian calendars and beliefs, Kartik Month is dedicated to Lord Vishnu and Goddess Lakshmi. Lakshmi Puja and Vishnu puja are observed throughout the month in some communities in North India. But, according to South Indian beliefs Kartik Month is dedicated to Lord Shiva also and the Mondays in this month considered highly auspicious.
Telugu and Kannada people celebrate Karthika Somavara Vratam by visiting Shiva temples, performing punya snana in holy rivers such as Godavari, Krishna, Tungabhadra, Cauvery.
In North India, the similar puja and vratha are observed on Shravan Somvar days (Mondays in Shravan Month).