Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 4 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/21/2020   18:36:30   (   0.01, -75.18) (  -0.35, -76.94)  199.26                80
 04/22/2020   18:20:14   (   0.01, -75.19) (   0.64, -72.35)  323.08                80
 04/24/2020   06:41:45   (  -0.01, -75.19) (   0.49, -77.56)  269.56                80
 04/25/2020   06:20:09   (  -0.02, -75.19) (  -0.51, -72.97)  252.79                80
 04/26/2020   18:41:47   (   0.01, -75.21) (  -0.67, -78.20)  340.86                80
 04/27/2020   18:25:32   (   0.01, -75.22) (   0.38, -73.63)  181.78                80
 04/29/2020   06:47:02   (  -0.01, -75.22) (   0.80, -78.82)  410.13                80
 04/30/2020   06:25:26   (  -0.01, -75.23) (  -0.25, -74.25)  112.57                80
 05/01/2020   18:47:05   (   0.00, -75.25) (  -0.93, -79.47)  480.81                80
 05/02/2020   18:30:48   (   0.00, -75.26) (   0.07, -74.89)   42.39                80