Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 5 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/01/2020   18:47:05   (   0.01, -75.19) (  -0.93, -79.47)  487.06                80
 05/02/2020   18:30:49   (   0.01, -75.20) (   0.07, -74.88)   35.81                80
 05/05/2020   06:33:23   (  -0.01, -75.23) (   0.05, -75.50)   31.79                80
 05/06/2020   06:11:48   (  -0.01, -75.24) (  -1.01, -70.93)  491.35                80
 05/07/2020   18:33:26   (   0.01, -75.26) (  -0.18, -76.16)  101.81                80
 05/08/2020   18:17:10   (   0.01, -75.28) (   0.82, -71.57)  421.76                80
 05/10/2020   06:38:40   (  -0.01, -75.30) (   0.35, -76.77)  167.78                80
 05/11/2020   06:17:05   (  -0.01, -75.32) (  -0.71, -72.20)  355.97                80
 05/12/2020   18:38:43   (   0.00, -75.35) (  -0.48, -77.42)  236.51                80
 05/13/2020   18:22:27   (   0.00, -75.37) (   0.58, -72.85)  287.88                80