Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 7 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/04/2019   06:26:43   (  -0.02, -75.19) (  -0.27, -74.06)  129.30                80
 07/05/2019   18:45:44   (   0.01, -75.19) (  -0.93, -79.29)  467.93                80
 07/06/2019   18:29:29   (   0.01, -75.20) (   0.12, -74.73)   53.48                80
 07/09/2019   06:29:26   (  -0.00, -75.21) (   0.04, -75.36)   17.72                80
 07/11/2019   18:32:12   (   0.00, -75.23) (  -0.18, -76.03)   91.59                80
 07/12/2019   18:15:57   (   0.00, -75.24) (   0.87, -71.47)  430.60                80
 07/14/2019   06:34:50   (  -0.01, -75.26) (   0.29, -76.68)  161.38                80
 07/15/2019   06:18:34   (  -0.01, -75.27) (  -0.69, -72.10)  361.13                80
 07/16/2019   18:37:35   (   0.01, -75.30) (  -0.47, -77.34)  233.62                80
 07/17/2019   18:21:20   (   0.01, -75.31) (   0.58, -72.78)  289.39                80