Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/19/2021   06:58:56   (   0.02, -75.19) (   0.82, -78.60)  388.92                80
 11/20/2021   06:38:00   (   0.03, -75.19) (  -0.21, -74.18)  115.49                80
 11/22/2021   18:42:33   (  -0.03, -75.20) (  -0.04, -75.26)    7.51                80
 11/23/2021   18:27:04   (  -0.02, -75.20) (   0.94, -70.88)  493.31                80
 11/25/2021   06:49:51   (   0.02, -75.21) (   0.27, -76.38)  132.75                80
 11/26/2021   06:29:09   (   0.02, -75.22) (  -0.70, -72.01)  365.40                80
 11/27/2021   18:52:15   (  -0.01, -75.23) (  -0.55, -77.59)  268.93                80
 11/28/2021   18:36:59   (  -0.01, -75.24) (   0.41, -73.24)  226.98                80
 11/30/2021   07:00:05   (   0.01, -75.26) (   0.81, -78.83)  406.28                80
 12/01/2021   06:39:35   (   0.01, -75.27) (  -0.15, -74.51)   86.93                80