It is common practice to open a shop or business house inviting friends and relatives at as auspicious Muhoortha, after conducting pooja and lighting a lamp.
The important conditions for election of auspicious time for Opening a shop, are as follows.
Unfavorable week days:
Most favorable stars:
Rohini, Uthram, Uthradam, Uthrattathi, Makayiram, Chithira, Anizham, Revathi, Aswathy, Pooyam, Atham.
Unfavorable Nithya Yogas:
Vishkamba, Athigandha, Soola, Gandha. Vyaghata,Vagra, Vyathipatha, Parikha, Vydhrithi.
Riktha Tithis (Chathurthi, Navami,Chathurdhasi) and Krishna Paksha Ashtami.
Apart from these common Panchanga sudhi checks, the common astrological quality based on the horoscope for the moment is also analyze. Also the factors such as solar and lunar eclipses Samkranti and Sandhyakalam are considered during the Muhoortha search.
There are variations in regional practices for selecting Muhoortha for opening a shop. You are advised to take these factors also in to consideration while selecting a Muhoortha.