Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 12 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/07/2019   18:14:37   (  -0.01, -75.20) (   0.88, -71.20)  455.54                80
 12/09/2019   06:36:10   (   0.01, -75.20) (   0.25, -76.41)  137.36                80
 12/10/2019   06:14:34   (   0.01, -75.21) (  -0.77, -71.84)  384.42                80
 12/11/2019   18:36:12   (  -0.01, -75.21) (  -0.45, -77.06)  211.33                80
 12/12/2019   18:19:57   (  -0.01, -75.22) (   0.57, -72.49)  310.65                80
 12/14/2019   06:41:29   (   0.02, -75.22) (   0.56, -77.70)  281.70                80
 12/15/2019   06:19:54   (   0.02, -75.23) (  -0.47, -73.12)  240.22                80
 12/16/2019   18:41:33   (  -0.01, -75.24) (  -0.69, -78.36)  355.31                80
 12/17/2019   18:22:38   (  -0.01, -75.24) (   0.33, -73.78)  166.92                80
 12/19/2019   06:46:49   (   0.01, -75.26) (   0.85, -78.98)  424.39                80
 12/20/2019   06:25:13   (   0.00, -75.27) (  -0.17, -74.41)   98.24                80