Shops: From around 7 am - 6 pm (varies by individual store)
Restaurants: From around 6 am - 9 pm (varies by individual store)
Wikipedia https://ja.wikipedia.org/wiki/二条市場
More information http://www.japan-guide.com/e/e5310.html
Address (Unnamed Road), Sapporo, Japan
Coordinates 43°3'30.106" N 141°21'31.069" E