日月无光

Explanation: Even the sun and the moon have lost glory. Analogy is extremely dark. Thesaurus:  terribly; fiercely; very, A dark and stormy Antonym Group:  light breeze and clear moon, auspicious day, the golden years, Moonlight Rushui, Next month Rujing, Yue Mingxingxi, month Long star distant, Yuebaifengqing, beautiful scene on a bright day, propitious date