What's the meaning of "Living Glory Day" in Taoism?

There is no such thing as living obsidian in Taoism, but it may refer to the day of fire obsidian.

Obsidian: shining; Bright: "There is obsidian at sunrise". The sun, the moon and the stars are collectively called "Obsidian", and the seven stars of the sun, the moon, fire, water, wood, gold and earth are collectively called "Seven Obsidian". In the past, they used to call the seven days of the week, such as "Sun Obsidian Day" is Sunday, "Moon Obsidian Day" is Monday, Fire Obsidian Day is Tuesday, and so on.