Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 4 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2019   18:29:40   (  -0.00, -75.20) (   0.09, -74.67)   60.69                80
 04/26/2019   06:32:19   (   0.00, -75.20) (  -0.00, -75.32)   12.91                80
 04/28/2019   18:32:24   (   0.00, -75.23) (  -0.17, -75.99)   86.56                80
 04/29/2019   18:16:10   (   0.00, -75.24) (   0.86, -71.42)  435.42                80
 05/01/2019   06:37:42   (  -0.00, -75.25) (   0.32, -76.63)  157.37                80
 05/02/2019   06:16:08   (   0.00, -75.26) (  -0.72, -72.06)  364.83                80
 05/03/2019   18:37:49   (  -0.00, -75.29) (  -0.43, -77.31)  229.77                80
 05/04/2019   18:21:35   (  -0.00, -75.31) (   0.60, -72.74)  292.84                80
 05/06/2019   06:43:07   (  -0.00, -75.33) (   0.57, -77.95)  299.03                80