赤口 しゃっこう Also written しゃっく, じゃっく, じゃっこう, せきぐち Meanings Noun day that is unlucky except between the auspicious hours of 11am and 1pm (in the traditional calendar) See also: 六曜 (ろくよう). Kanji 赤 red. Read as シャク. 口 mouth. Read as コウ. Jinuma: Japanese Dictionary · Word lists