Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/18/2019   06:26:49   (  -0.02, -75.19) (  -0.11, -74.70)   55.55                80
 06/20/2019   18:29:35   (  -0.00, -75.20) (  -0.06, -75.37)   20.64                80
 06/23/2019   06:34:52   (   0.01, -75.21) (   0.21, -76.01)   91.22                80
 06/24/2019   06:13:17   (   0.02, -75.22) (  -0.83, -71.44)  430.67                80
 06/25/2019   18:34:58   (  -0.02, -75.23) (  -0.32, -76.69)  165.63                80
 06/26/2019   18:18:43   (  -0.02, -75.24) (   0.67, -72.11)  356.68                80
 06/28/2019   06:40:15   (   0.02, -75.26) (   0.47, -77.32)  234.74                80
 06/29/2019   06:18:41   (   0.02, -75.27) (  -0.57, -72.76)  287.51                80
 06/30/2019   18:40:21   (  -0.01, -75.29) (  -0.63, -77.99)  308.60                80
 07/01/2019   18:24:07   (  -0.01, -75.30) (   0.42, -73.43)  213.83                80