Tsok (By Tsem Rinpoche)

Tsok happens twice a month every month. It is a special day where the dakinis of the 24 holy places gather together to bless the tantric practitioners body, nerves, chi, chakras, speech and mind. On Tsok day we can perform a special tsok to… our yidam or a general tsok for all the Three Jewels (Lama Chopa). Tsok gathers tremendous amounts of merits to support our tantric meditations in order to get results.

Tsok tradition was started (from Buddha) in Ancient Indian Buddhism by the great Buddhist Mahasiddhas such as Tilopa and Naropa etc..and brought to Tibet as a means for tantrikas who have little means to gather great merits in order to gain attainements. Atisha and Guru Rinpoche shared Tsok practice with the Tibetans 1,000 years ago. Once you recieved higher tantra initiation you must perform tsok twice a month for life. Today is tsok day. And the Tantrikas gather at Kechara to perform Lama Chopa like they do twice every month.

Tsem Rinpoche

Source

https://www.tsemrinpoche.com/tsem-tulku-rinpoche/buddhas-dharma/tsok.html