2016
- Thursday, 7 January 2016 · Guru Pradosh (Krishna)
- Thursday, 21 January 2016 · Guru Pradosh (Shukla)
- Saturday, 6 February 2016 · Shani Pradosh (Krishna)
- Saturday, 20 February 2016 · Shani Pradosh (Shukla)
- Sunday, 6 March 2016 · Ravi Pradosh (Krishna)
- Sunday, 20 March 2016 · Ravi Pradosh (Shukla)
- Tuesday, 5 April 2016 · Bhauma Pradosh (Krishna)
- Tuesday, 19 April 2016 · Bhauma Pradosh (Shukla)
- Wednesday, 4 May 2016 · Budha Pradosh (Krishna)
- Thursday, 19 May 2016 · Guru Pradosh (Shukla)
- Thursday, 2 June 2016 · Guru Pradosh (Krishna)
- Friday, 17 June 2016 · Shukra Pradosh (Shukla)
- Saturday, 2 July 2016 · Shani Pradosh (Krishna)
- Sunday, 17 July 2016 · Ravi Pradosh (Shukla)
- Sunday, 31 July 2016 · Ravi Pradosh (Krishna)
- Monday, 15 August 2016 · Soma Pradosh (Shukla)
- Monday, 29 August 2016 · Soma Pradosh (Krishna)
- Wednesday, 14 September 2016 · Budha Pradosh (Shukla)
- Wednesday, 28 September 2016 · Budha Pradosh (Krishna)
- Thursday, 13 October 2016 · Guru Pradosh (Shukla)
- Thursday, 27 October 2016 · Guru Pradosh (Krishna)
- Saturday, 12 November 2016 · Shani Pradosh (Shukla)
- Saturday, 26 November 2016 · Shani Pradosh (Krishna)
- Sunday, 11 December 2016 · Ravi Pradosh (Shukla)
- Monday, 26 December 2016 · Soma Pradosh (Krishna)
2017
- Tuesday, 10 January 2017 · Bhauma Pradosh (Shukla)
- Wednesday, 25 January 2017 · Budha Pradosh (Krishna)
- Wednesday, 8 February 2017 · Budha Pradosh (Shukla)
- Friday, 24 February 2017 · Shukra Pradosh (Krishna)
- Friday, 10 March 2017 · Shukra Pradosh (Shukla)
- Saturday, 25 March 2017 · Shani Pradosh (Krishna)
- Saturday, 8 April 2017 · Shani Pradosh (Shukla)
- Monday, 24 April 2017 · Soma Pradosh (Krishna)
- Monday, 8 May 2017 · Soma Pradosh (Shukla)
- Tuesday, 23 May 2017 · Bhauma Pradosh (Krishna)
- Tuesday, 6 June 2017 · Bhauma Pradosh (Shukla)
- Wednesday, 21 June 2017 · Budha Pradosh (Krishna)
- Thursday, 6 July 2017 · Guru Pradosh (Shukla)
- Friday, 21 July 2017 · Shukra Pradosh (Krishna)
- Friday, 4 August 2017 · Shukra Pradosh (Shukla)
- Saturday, 19 August 2017 · Shani Pradosh (Krishna)
- Sunday, 3 September 2017 · Ravi Pradosh (Shukla)
- Sunday, 17 September 2017 · Ravi Pradosh (Krishna)
- Tuesday, 3 October 2017 · Bhauma Pradosh (Shukla)
- Tuesday, 17 October 2017 · Bhauma Pradosh (Krishna)
- Wednesday, 1 November 2017 · Budha Pradosh (Shukla)
- Wednesday, 15 November 2017 · Budha Pradosh (Krishna)
- Friday, 1 December 2017 · Shukra Pradosh (Shukla)
- Friday, 15 December 2017 · Shukra Pradosh (Krishna)
- Saturday, 30 December 2017 · Shani Pradosh (Shukla)
How the date is fixed
Trayodashi, the thirteenth day of each half, kept on the day it is running at pradosh, the twilight after sunset. It is named for its weekday: Soma Pradosh, Shani Pradosh and so on.
About
Pradosh vrat is kept twice a month, on the Trayodashi of each fortnight, during the pradosh period of roughly 96 minutes after sunset. The day is chosen so that Trayodashi is running at sunset, even if it is absent at sunrise; when it touches sunset on two days, the first is usually taken. Each weekday gives the observance a name, Soma Pradosh on Monday and Shani Pradosh on Saturday being the ones most often singled out. In Tamil Nadu the Pradosham puja at Shiva temples, with the Nandi abhisheka, is a regular feature of temple calendars.
How it is observed
A fast until dusk and Shiva worship with abhisheka in the pradosh window after sunset.