The National Time Service Center, the Chinese Academy of Sciences (中国科学院国家授时中心), formerly known as Shaanxi Astronomical Observatory (陕西天文台), was established...

Astronomical Observatory (中国科学院上海天文台) Purple Mountain Observatory (中国科学院紫金山天文台) National Time Service Center (中国科学院国家授时中心), former Shaanxi Astronomical...