sources usually give 12 June. Also known as "Wu Hou" (武后). The title Huanghou (皇后) given to consorts it's often translated as "Empress consort" in English....

and Issue: Empress Taiwu, of the Helian clan (太武皇后 赫連氏; d. 453) Empress Jing'ai, of the He clan (敬哀皇后 賀氏; d. 428) Tuoba Huang, Emperor Jingmu (景穆皇帝 拓跋晃;...