2008
- Saturday, 5 January 2008 · Shani Pradosh (Krishna)
- Sunday, 20 January 2008 · Ravi Pradosh (Shukla)
- Monday, 4 February 2008 · Soma Pradosh (Krishna)
- Monday, 18 February 2008 · Soma Pradosh (Shukla)
- Wednesday, 5 March 2008 · Budha Pradosh (Krishna)
- Wednesday, 19 March 2008 · Budha Pradosh (Shukla)
- Thursday, 3 April 2008 · Guru Pradosh (Krishna)
- Thursday, 17 April 2008 · Guru Pradosh (Shukla)
- Saturday, 3 May 2008 · Shani Pradosh (Krishna)
- Saturday, 17 May 2008 · Shani Pradosh (Shukla)
- Sunday, 1 June 2008 · Ravi Pradosh (Krishna)
- Sunday, 15 June 2008 · Ravi Pradosh (Shukla)
- Monday, 30 June 2008 · Soma Pradosh (Krishna)
- Tuesday, 15 July 2008 · Bhauma Pradosh (Shukla)
- Wednesday, 30 July 2008 · Budha Pradosh (Krishna)
- Thursday, 14 August 2008 · Guru Pradosh (Shukla)
- Thursday, 28 August 2008 · Guru Pradosh (Krishna)
- Friday, 12 September 2008 · Shukra Pradosh (Shukla)
- Friday, 26 September 2008 · Shukra Pradosh (Krishna)
- Sunday, 12 October 2008 · Ravi Pradosh (Shukla)
- Sunday, 26 October 2008 · Ravi Pradosh (Krishna)
- Tuesday, 11 November 2008 · Bhauma Pradosh (Shukla)
- Monday, 24 November 2008 · Soma Pradosh (Krishna)
- Wednesday, 10 December 2008 · Budha Pradosh (Shukla)
- Wednesday, 24 December 2008 · Budha Pradosh (Krishna)
2009
- Thursday, 8 January 2009 · Guru Pradosh (Shukla)
- Friday, 23 January 2009 · Shukra Pradosh (Krishna)
- Saturday, 7 February 2009 · Shani Pradosh (Shukla)
- Sunday, 22 February 2009 · Ravi Pradosh (Krishna)
- Sunday, 8 March 2009 · Ravi Pradosh (Shukla)
- Tuesday, 24 March 2009 · Bhauma Pradosh (Krishna)
- Tuesday, 7 April 2009 · Bhauma Pradosh (Shukla)
- Wednesday, 22 April 2009 · Budha Pradosh (Krishna)
- Wednesday, 6 May 2009 · Budha Pradosh (Shukla)
- Friday, 22 May 2009 · Shukra Pradosh (Krishna)
- Friday, 5 June 2009 · Shukra Pradosh (Shukla)
- Saturday, 20 June 2009 · Shani Pradosh (Krishna)
- Saturday, 4 July 2009 · Shani Pradosh (Shukla)
- Sunday, 19 July 2009 · Ravi Pradosh (Krishna)
- Monday, 3 August 2009 · Soma Pradosh (Shukla)
- Tuesday, 18 August 2009 · Bhauma Pradosh (Krishna)
- Tuesday, 1 September 2009 · Bhauma Pradosh (Shukla)
- Wednesday, 16 September 2009 · Budha Pradosh (Krishna)
- Thursday, 1 October 2009 · Guru Pradosh (Shukla)
- Thursday, 15 October 2009 · Guru Pradosh (Krishna)
- Saturday, 31 October 2009 · Shani Pradosh (Shukla)
- Saturday, 14 November 2009 · Shani Pradosh (Krishna)
- Sunday, 29 November 2009 · Ravi Pradosh (Shukla)
- Sunday, 13 December 2009 · Ravi Pradosh (Krishna)
- Tuesday, 29 December 2009 · Bhauma 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.