Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 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)
 06/20/2019   18:29:35   (   0.01, -75.20) (  -0.03, -75.38)   20.62                80
 06/23/2019   06:34:52   (   0.01, -75.21) (   0.18, -76.01)   91.41                80
 06/24/2019   06:13:17   (   0.02, -75.21) (  -0.80, -71.43)  430.43                80
 06/25/2019   18:34:58   (  -0.02, -75.23) (  -0.35, -76.68)  165.65                80
 06/26/2019   18:18:43   (  -0.02, -75.24) (   0.70, -72.12)  356.58                80
 06/28/2019   06:40:15   (   0.02, -75.26) (   0.50, -77.32)  235.11                80
 06/29/2019   06:18:40   (   0.02, -75.27) (  -0.54, -72.75)  287.04                80
 06/30/2019   18:40:22   (  -0.00, -75.29) (  -0.59, -78.00)  308.99                80
 07/01/2019   18:24:06   (  -0.00, -75.30) (   0.39, -73.42)  213.33                80
 07/03/2019   06:45:38   (  -0.00, -75.32) (   0.76, -78.63)  377.99                80