Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 4 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/16/2020   18:31:13   (   0.01, -75.20) (  -0.08, -75.67)   53.53                80
 04/17/2020   18:14:56   (   0.01, -75.20) (   0.91, -71.08)  469.13                80
 04/19/2020   06:36:28   (  -0.01, -75.20) (   0.23, -76.29)  123.51                80
 04/20/2020   06:14:51   (  -0.01, -75.21) (  -0.76, -71.70)  399.40                80
 04/21/2020   18:36:31   (   0.00, -75.25) (  -0.35, -76.94)  192.60                80
 04/22/2020   18:20:14   (   0.01, -75.26) (   0.64, -72.35)  330.81                80
 04/24/2020   06:41:45   (  -0.01, -75.27) (   0.50, -77.56)  260.63                80
 04/25/2020   06:20:09   (  -0.01, -75.28) (  -0.50, -72.97)  262.76                80
 04/26/2020   18:41:48   (   0.01, -75.32) (  -0.62, -78.21)  328.98                80
 04/27/2020   18:25:32   (   0.01, -75.34) (   0.38, -73.63)  194.73                80