वास्तु मण्डन (मण्डन सूत्रधार - गृह, राजप्रासाद, दुर्ग एवं नगर-वास्तु सटीक)

Ch. I – Miśrakādhyāyaḥ 11
27.AB Horā is of two and half hours duration; its result is counted from
one’s own day (beginning from the very start of the day and
giving results according to the results of the day)
27CD-28. For Sunday, Friday, Wednesday, Monday, Saturday, Thurs-
day and Tuesday--- the 1st Muhūrta should be discarded, as well
as the 4th, 15th, 12th, 10th, and 14th. The remaining nine
Muhūrtas are regarded as auspicious in the construction of a house.
29. Mṛgaśirā, Aśvinī, Revatī, Maitra, Jyeṣṭhā, Krittikā, Uttarāṣāḍhā,
Uttarabhādra, (āditya karatrayam) with their faces in slanting
positions are auspicious for transport (Yāna), plough (hala) ma-
chinery and for quadruples.
30. Puṣyā, Uttarā, Ārdrā, Rohiṇī and three śrutis with their faces in
up- ward positions are auspicious for the sanctification of a
house, umbrella, flag, pleasure garden and palaces.
31. Viśākhā, Kṛttikā, Mūlā, Pūrvā (Bhadrā), Yāmya (Bharaṇī) Maghā—if
facing downwards are good for houses and water-reservoirs.
32. Sunday, Tuesday, Riktā and Dagdhā Tithis and Utpāta yogas and
other inauspicious things according to the śāstra of astrology, should
be discarded.
33. The number of Caitra and other months are to be multiplied by
2, and to be added by 15. Then it will be divided by 7, and the
remainder is the number of days of the construction.