In Shwetark Sadhana Procedure there is very much significance of Muhurat (or auspicious time period). This why one should be very sure before going ahead if necessary you should consult some learned person or pandit or astrologer or consult panchang beforehand. When the day is Sunday and Pushya Nakshatra is activated then this time period is said to be most suitable. This is also comm... https://www.aghortantra.com/shwetark-sadhana-procedure/