Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/09/2021   18:36:42   (   0.03, -75.20) (   0.06, -75.08)   14.12                80
 03/12/2021   06:39:12   (  -0.01, -75.20) (   0.06, -75.67)   52.49                80
 03/13/2021   06:17:35   (  -0.01, -75.21) (  -0.95, -71.08)  471.11                80
 03/14/2021   18:39:12   (   0.01, -75.23) (  -0.20, -76.30)  121.17                80
 03/15/2021   18:22:55   (   0.01, -75.25) (   0.82, -71.71)  403.02                80
 03/17/2021   06:44:23   (  -0.01, -75.26) (   0.33, -76.90)  185.47                80
 03/18/2021   06:22:46   (  -0.02, -75.28) (  -0.69, -72.31)  338.67                80
 03/19/2021   18:44:22   (   0.01, -75.30) (  -0.51, -77.51)  253.09                80
 03/20/2021   18:28:05   (   0.01, -75.32) (   0.57, -72.94)  271.57                80