Q1:
time: 8:00-8:10 unix:1479168000-1479168600
time: 12:00-12:10 unix:1479182400-1479183000
time: 17:00-17:10 unix:1479200400-1479201000
3km*3km map coordinate point
top left corner (34.241936,108.92909) top right corner(34.241936,108.96209)
down left corner (34.214946,108.92909) down right corner(34.214946,108.96209)