Parinirvana Day, also known as Nirvana Day, is a Buddhist holiday observed worldwide, particularly by Mahāyāna Buddhists on February 15. This day commemorates the parinirvana of Buddha Shakyamuni, marking the complete nirvana achieved upon his death. Celebrations typically involve reading excerpts from the Nirvana Sutra that recount the last days of the Buddha's life. Many Buddhists visit monasteries and temples, engaging in meditation and reflection on the impermanence of life and the inevitability of death. The holiday serves as an opportunity for individuals to contemplate their own mortality and the deaths of loved ones.