In Buddhism, what day is the 19th of June in the lunar calendar?

In Buddhism, June 19th of the lunar calendar is the day when avalokitesvara attained enlightenment.

Guanyin Bodhisattva (Sanskrit: Avalokitesvara with a Thousand Hands? Vara), Guanyin Bodhisattva comes from Hokkekyo translated by Zhu Fahu and his disciples in Dunhuang Temple in Chang 'an. Zhu Fahu first translated "Shi Guangyin", and his disciple Nie Daozhen changed it to "Guan". Xuanzang's new translation is Guan Yu, and China is called Guanyin for short.

Guanyin Bodhisattva is a symbol of compassion and wisdom in Buddhism and occupies an extremely important position in Mahayana Buddhism and folk beliefs. The spirit of great compassion led by Guanyin Bodhisattva is regarded as the foundation of Mahayana Buddhism. According to Buddhist scriptures, avalokitesvara is the embodiment of Buddha in previous lives. In the boundless land, he looked for voices everywhere as a bodhisattva to save his suffering.

Guanyin and Amitabha have a special relationship. He is one of the Three Sages in the West, a monk who fills his life, and a bodhisattva who inherits the status of Amitabha. It is also said that Guanyin is the incarnation of Amitabha.