Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 4 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/19/2020   06:36:28   (  -0.01, -75.17) (   0.22, -76.29)  127.30                80
 04/20/2020   06:14:51   (  -0.01, -75.17) (  -0.77, -71.70)  394.53                80
 04/21/2020   18:36:31   (   0.01, -75.18) (  -0.35, -76.94)  199.41                80
 04/22/2020   18:20:14   (   0.01, -75.19) (   0.64, -72.35)  322.92                80
 04/24/2020   06:41:45   (  -0.01, -75.18) (   0.49, -77.56)  269.81                80
 04/25/2020   06:20:09   (  -0.01, -75.19) (  -0.50, -72.97)  252.50                80
 04/26/2020   18:41:47   (   0.01, -75.21) (  -0.68, -78.20)  341.16                80
 04/27/2020   18:25:32   (   0.01, -75.22) (   0.37, -73.63)  181.46                80
 04/29/2020   06:47:02   (  -0.01, -75.22) (   0.82, -78.82)  410.55                80
 04/30/2020   06:25:27   (  -0.01, -75.22) (  -0.24, -74.24)  112.08                80
 05/01/2020   18:47:05   (   0.00, -75.25) (  -0.94, -79.47)  481.29                80
 05/02/2020   18:30:49   (   0.00, -75.26) (   0.11, -74.90)   41.97                80