Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/22/2020   06:21:24   (   0.00, -75.20) (  -0.43, -73.11)  237.08                80
 06/23/2020   18:43:03   (  -0.00, -75.20) (  -0.73, -78.34)  358.24                80
 06/24/2020   18:26:48   (  -0.00, -75.21) (   0.34, -73.77)  164.16                80
 06/26/2020   06:48:17   (   0.01, -75.21) (   0.84, -78.96)  426.79                80
 06/27/2020   06:26:40   (   0.01, -75.22) (  -0.17, -74.38)   95.91                80
 06/28/2020   18:48:20   (  -0.01, -75.23) (  -0.98, -79.61)  498.29                80
 06/29/2020   18:32:03   (  -0.01, -75.25) (   0.03, -75.03)   24.76                80
 07/02/2020   06:34:37   (  -0.01, -75.27) (   0.09, -75.64)   42.44                80
 07/03/2020   06:13:02   (  -0.01, -75.28) (  -0.98, -71.07)  480.76                80
 07/04/2020   18:34:40   (   0.01, -75.31) (  -0.22, -76.29)  112.53                80
 07/05/2020   18:18:23   (   0.01, -75.32) (   0.79, -71.71)  411.29                80