Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 6 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/11/2020   06:29:48   (   0.00, -75.16) (  -0.02, -75.18)    3.50                80
 06/13/2020   18:32:31   (  -0.01, -75.18) (  -0.15, -75.83)   74.01                80
 06/14/2020   18:16:14   (  -0.01, -75.19) (   0.86, -71.24)  448.94                80
 06/16/2020   06:37:45   (   0.00, -75.20) (   0.26, -76.44)  141.54                80
 06/17/2020   06:16:08   (  -0.00, -75.21) (  -0.75, -71.86)  381.42                80
 06/18/2020   18:37:48   (   0.00, -75.23) (  -0.42, -77.09)  212.39                80
 06/19/2020   18:21:31   (   0.01, -75.24) (   0.59, -72.51)  310.99                80
 06/21/2020   06:43:01   (  -0.01, -75.26) (   0.53, -77.71)  278.68                80
 06/22/2020   06:21:25   (  -0.00, -75.27) (  -0.47, -73.12)  244.64                80
 06/23/2020   18:43:04   (   0.00, -75.30) (  -0.68, -78.36)  348.94                80
 06/24/2020   18:26:48   (   0.00, -75.31) (   0.32, -73.77)  174.84                80