Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 7 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)
 07/19/2019   06:42:52   (  -0.03, -75.20) (   0.60, -77.98)  317.48                80
 07/20/2019   06:21:17   (  -0.03, -75.21) (  -0.45, -73.41)  204.99                80
 07/21/2019   18:42:58   (   0.04, -75.23) (  -0.72, -78.66)  389.83                80
 07/22/2019   18:26:42   (   0.04, -75.25) (   0.27, -74.08)  133.19                80
 07/24/2019   06:48:16   (  -0.04, -75.28) (   0.84, -79.30)  457.37                80
 07/25/2019   06:26:40   (  -0.04, -75.30) (  -0.15, -74.72)   65.80                80
 07/27/2019   18:29:26   (   0.05, -75.35) (   0.04, -75.40)    5.13                80
 07/30/2019   06:34:44   (  -0.06, -75.41) (   0.09, -76.04)   72.03                80
 07/31/2019   06:13:09   (  -0.06, -75.43) (  -0.96, -71.47)  451.31                80