Which area sees the sun earlier, Sanming, Fujian, Yongan or Beijing?

The longitude of Yongan City, Sanming City, Fujian Province is 117.37 East Longitude;

The longitude of Beijing City Urban Area is 116.3 East Longitude;

The longitude differs by 15 degree, the time difference is 1 hour; so theoretically, Yongan urban area will see the sun about 4 minutes earlier than Beijing urban area.

（117.37-116.3）÷15×60≈4