The month of January, specifically 3-31, is a powerful time for practitioners of Heruka and Vajrayogini to make offerings and do retreat.
The two tsog days within this month are particularly special. The first, January 10, is a special day of Vajrayogini, and the second, January 25, is a special day of Heruka. It is particularly important to make special offerings on these two days.
The extensive self-generation practice of Vajrayogini, the female Buddha who is the manifestation of the wisdom of all Buddhas. This practice is open to those with Highest Yoga Tantra Empowerments.