Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/03/2021   06:49:52   (  -0.09, -75.19) (   0.26, -76.81)  184.57                80
 10/04/2021   06:28:13   (  -0.10, -75.20) (  -0.75, -72.22)  338.96                80
 10/05/2021   18:52:29   (   0.09, -75.21) (  -0.38, -77.43)  252.88                80
 10/06/2021   18:30:51   (   0.10, -75.22) (   0.64, -72.84)  271.17                80
 10/08/2021   06:54:57   (  -0.09, -75.22) (   0.54, -78.01)  317.44                80
 10/09/2021   06:33:19   (  -0.09, -75.23) (  -0.48, -73.41)  206.51                80
 10/10/2021   18:57:35   (   0.08, -75.24) (  -0.65, -78.63)  385.16                80
 10/11/2021   18:35:57   (   0.09, -75.25) (   0.37, -74.03)  138.98                80
 10/13/2021   07:00:03   (  -0.08, -75.26) (   0.80, -79.20)  448.99                80
 10/14/2021   06:38:24   (  -0.09, -75.27) (  -0.21, -74.61)   75.33                80