Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/07/2019   06:34:58   (  -0.01, -75.20) (   0.32, -76.66)  166.88                80
 06/08/2019   06:18:42   (   0.01, -75.20) (  -0.66, -72.08)  354.61                80
 06/09/2019   18:37:43   (  -0.02, -75.20) (  -0.51, -77.33)  242.66                80
 06/10/2019   18:21:29   (  -0.02, -75.21) (   0.53, -72.76)  279.01                80
 06/12/2019   06:40:20   (   0.02, -75.22) (   0.66, -77.96)  313.12                80
 06/13/2019   06:24:06   (   0.02, -75.23) (  -0.38, -73.39)  208.80                80
 06/14/2019   18:43:07   (  -0.01, -75.24) (  -0.79, -78.64)  387.68                80
 06/15/2019   18:26:53   (  -0.01, -75.25) (   0.25, -74.07)  134.43                80
 06/17/2019   06:45:45   (  -0.00, -75.28) (   0.88, -79.29)  456.91                80
 06/18/2019   06:29:30   (   0.00, -75.29) (  -0.15, -74.72)   65.69                80
 06/20/2019   18:29:36   (  -0.01, -75.33) (  -0.02, -75.39)    6.60                80