The installation of a deity should be done when the Sun is in the Northern course. The lunar month of Magha should be avoided. According to Kalaprakasika, the ceremony is to be done when Jupiter and Venus are dignified and devoid of adverse influences.
Rohini, Mrigasira. Punarvasu, Pushya, Uttara, Hasta, Swati, Uttarashadha and Uttarabhadra are good constellations for this purpose. All odd lunar days (except the 9th) including the 2nd, 6th and 10th are favourable. The Lagna must be a fixed sign. A common sign may be selected for a female Deity. Movable signs should always be rejected. The Lagna should not be conjoined by the luminaries or malefics or otherwise the town concerned will be destroyed. No malefic should occupy the 7th. There should be no planet in the 8th. The ceremony should be avoided at the end of an Ayana, the end of a year, of a lunar day and of an asterism; and on days on which halos round the Sun and the Moon are visible.