Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 9 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/21/2020   18:37:48   (   0.03, -75.21) (  -0.32, -76.80)  181.27                80
 09/22/2020   18:21:31   (   0.03, -75.21) (   0.71, -72.22)  340.87                80
 09/24/2020   06:43:00   (  -0.03, -75.20) (   0.46, -77.41)  251.22                80
 09/25/2020   06:21:24   (  -0.04, -75.21) (  -0.56, -72.83)  271.13                80
 09/26/2020   18:43:02   (   0.04, -75.22) (  -0.61, -78.05)  323.18                80
 09/27/2020   18:26:46   (   0.04, -75.23) (   0.41, -73.47)  199.80                80
 09/29/2020   06:48:15   (  -0.05, -75.24) (   0.75, -78.66)  390.57                80
 09/30/2020   06:26:40   (  -0.05, -75.25) (  -0.33, -74.09)  132.93                80
 10/01/2020   18:48:18   (   0.05, -75.28) (  -0.84, -79.32)  459.84                80
 10/02/2020   18:32:01   (   0.05, -75.29) (   0.18, -74.73)   64.13                80