Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 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)
 06/15/2019   18:26:52   (  -0.01, -75.18) (   0.24, -74.07)  127.40                80
 06/17/2019   06:48:23   (   0.01, -75.18) (   0.94, -79.27)  466.85                80
 06/18/2019   06:26:49   (   0.01, -75.17) (  -0.10, -74.70)   53.17                80
 06/20/2019   18:29:35   (   0.00, -75.15) (  -0.07, -75.37)   26.06                80
 06/21/2019   18:13:20   (   0.00, -75.14) (   0.98, -70.80)  494.71                80
 06/23/2019   06:34:51   (  -0.01, -75.15) (   0.21, -76.01)   98.14                80
 06/24/2019   06:13:17   (  -0.01, -75.15) (  -0.83, -71.44)  422.92                80
 06/25/2019   18:34:58   (   0.01, -75.15) (  -0.31, -76.69)  175.13                80
 06/26/2019   18:18:43   (   0.01, -75.15) (   0.68, -72.11)  346.42                80
 06/28/2019   06:40:15   (  -0.01, -75.17) (   0.46, -77.32)  245.23                80