Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/22/2021   18:44:40   (  -0.03, -75.20) (  -0.02, -75.13)    8.26                80
 11/25/2021   06:48:41   (   0.03, -75.21) (   0.22, -76.08)   99.93                80
 11/26/2021   06:27:40   (   0.02, -75.21) (  -0.77, -71.64)  406.95                80
 11/27/2021   18:50:13   (  -0.02, -75.23) (  -0.42, -77.09)  211.51                80
 11/28/2021   18:34:31   (  -0.02, -75.24) (   0.54, -72.64)  295.78                80
 11/30/2021   06:56:56   (   0.02, -75.25) (   0.63, -78.05)  318.42                80
 12/01/2021   06:35:55   (   0.02, -75.26) (  -0.37, -73.61)  188.78                80
 12/02/2021   18:58:29   (  -0.02, -75.28) (  -0.84, -79.06)  429.82                80
 12/03/2021   18:42:49   (  -0.02, -75.30) (   0.14, -74.62)   77.41                80