Also known asshop openingdukan udghatannew businessvyapar prarambh
Griha arambh (start of construction), griha pravesh, factory opening and other auspicious (mangalik) events are held in daytime, because work begun with the sun's energy goes well. After sunset creation is considered asleep.
Vastu poojan is done not only at the start of construction but at several stages and family events; at griha arambh and griha pravesh it is essential.
The whole house, with an offering at every devta pad
Take the pendulum with all its precautions and ask, for example: should I open a general store? If yes, turn clockwise; if no, anticlockwise. If it turns clockwise, select that business. Do not ask the next question at once; dip the pendulum in salt water again first. It can also tell whether a running business will do well later.
No. Do it at bhoomi poojan or shilanyas, when the first slab is laid, when the main door frame is installed and on griha pravesh; the start of construction and griha pravesh are essential. Also do it after a renovation in which walls are broken, for a marriage, the start of a job or business and the birth of a child, and once a year on a swayam siddh muhurta such as Akha Teej or Gudi Padwa for a year of happiness and peace.