Nyinthün

Nyinthün is a Tibetan word meaning “a period of one day"

Nyinthün is a weekly group practice of sitting and walking meditation held every Sunday morning. The practice begins and ends with a short set of traditional group chants and includes a dharma reading and a practice of compassion for those who have instruction in Tonglen.

Source

https://boston.shambhala.org/program-details/?id=329833