Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 4 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/10/2020   18:44:51   (   0.01, -75.24) (  -0.81, -78.98)  426.40                80
 04/11/2020   18:28:35   (   0.01, -75.25) (   0.18, -74.40)   97.10                80
 04/13/2020   06:50:06   (  -0.01, -75.26) (   0.96, -79.60)  494.12                80
 04/14/2020   06:28:31   (  -0.01, -75.28) (  -0.09, -75.03)   29.65                80
 04/16/2020   18:31:13   (   0.00, -75.35) (  -0.09, -75.67)   37.31                80
 04/17/2020   18:14:57   (   0.00, -75.37) (   0.96, -71.10)  487.27                80
 04/19/2020   06:36:28   (   0.00, -75.40) (   0.18, -76.30)  102.19                80
 04/20/2020   06:14:52   (  -0.00, -75.42) (  -0.81, -71.71)  422.56                80
 04/21/2020   18:36:31   (   0.00, -75.48) (  -0.30, -76.95)  167.00                80
 04/22/2020   18:20:15   (   0.00, -75.51) (   0.69, -72.37)  358.34                80