Daily: 4 p.m. - 9:30 p.m.
Wikipedia https://en.wikipedia.org/wiki/Donghuamen_Night_Market
More information http://english.visitbeijing.com.cn/play/thematic/n214828569.shtml
Address Donghuamen St, Dongcheng, Beijing, China, 100006
Coordinates 39°54'44.204" N 116°23'49.348" E