Tara the Wisdom Mother is invoked in times of personal difficulties, family and business problems, and when there is need for quick wisdom action. She manifests in twenty-one different forms to benefit all beings. In the aspect of Cittamani Tara, she responds quickly to the requests those who pray to her.
 

This puja is done every day by the nuns of Khachoe Ghakyil Ling Nunnery, with special dedication for all the sponsors of the nunnery.
 

Twice every month guru puja is performed by all the monks in celebration of the spiritual master. This puja is quite often recommended as a means to accumulate merit for those who died.

It is a comprehensive practice containing the essence of the entire teachings of sutra and tantra. It strengthens the bond with one's spiritual master and creates the cause for finding ones' spiritual master again in future lives. It accumulates extensive merit - offerings are made to all the enlightened beings in the form of the merit field, from Shakyamuni Buddha over the linage lamas to the personal spiritual master.

This puja is performed to remove all obstacles the long life.
Namgyalma is one of the three Long life Deities (white Tara, Amitayus, Namgyalma) Making requests to these deities helps to remove obstacles to one's life span (for example accidents, possibly fatal illness, as well as improve the quality of ones life.  During this puja extensive offerings are made to accumulate merit and to purify all the hindrances to one's long life.