Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 6 10.  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)    3.69                80
 06/13/2020   18:32:31   (  -0.01, -75.18) (  -0.14, -75.83)   74.08                80
 06/14/2020   18:16:15   (  -0.00, -75.19) (   0.86, -71.24)  448.90                80
 06/16/2020   06:37:45   (   0.00, -75.20) (   0.26, -76.44)  141.43                80
 06/17/2020   06:16:08   (  -0.00, -75.21) (  -0.74, -71.86)  381.56                80
 06/18/2020   18:37:48   (   0.00, -75.23) (  -0.42, -77.09)  212.29                80
 06/19/2020   18:21:32   (   0.01, -75.24) (   0.64, -72.52)  311.11                80
 06/21/2020   06:43:01   (  -0.00, -75.26) (   0.54, -77.71)  278.40                80
 06/22/2020   06:21:25   (  -0.00, -75.28) (  -0.46, -73.12)  244.97                80
 06/23/2020   18:43:04   (   0.00, -75.30) (  -0.69, -78.36)  348.67                80