Giving elaborate description of inauspicious days on which one should not undertake travels or journeys, Lord Vishnu told Shiva–‘Various Yoginis (goddesses) dwell in different directions on
specific days and one should never set out on journeys on those days. A yogini named Brahmani dwells in the East on Pratipada(first) and navami(ninth) of both the fortnights of each month and nobody should travel on both these dates towards east. Maheshwari dwells in the north on second and ninth of both the fortnights of each month and hence nobody should travel towards north on both these dates. Varahai dwells in the south on the fifth and thirteenth of both the fortnights of each month and hence it is unadvisable to travel towards south on the above mentioned dates. In the same manner, Indrani dwells in the west on sixth and fourteenth of both the fortnights of each month and therefore nobody should travel in this direction on both the above mentioned dates.’
While giving names of some auspicious Nakshatras suitable for undertaking journeys, Lord Vishnu said–‘Constellations like Ashvini, Anuradha, Revati, Mrigashira, Mool, Punarvasu, Pushya, Hast and Jyeshtha are auspicious for undertaking journeys.’
Lord Vishnu, giving some specific combinations of days and tithis considered to be inauspicious said–‘One should never travel on the following inauspicious days: Dwadashi falling on Sunday or Ekadashi falling on Monday or Navami falling on Wednesday or Ashtami falling on Thursday or Saptami falling on Friday and Shashthi falling on Saturday.
Amrit Yoga — It is the most auspicious yoga for commencing any work. The conjunction of a particular day and specific nakshatra constitute this yoga. Few examples of Amrit yoga are Mool nakshatra falling on Sunday, Shravan nakshatra on Monday, Uttara bhadrapad on Tuesday, Kritika on Wednesday, Punarvasu on Thursday, Purvafalguni on Friday and Swati nakshatra falling on Saturday.
Visha Yoga — It is considered to be an inauspicious yoga and unsuitable for commencing any important work. Few examples of this particular yoga are Bharni nakshatra falling on Friday, Chitra nakshatra on Monday, Uttarashadha on Tuesday, Dhanishtha on Wednesday, Shatabhisha on Thursday, Rohini on Friday, and Revati nakshatra falling on Saturday.