Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/28/2020   06:42:21   (   0.01, -75.22) (   0.39, -76.83)  184.18                80
 12/29/2020   06:20:44   (   0.01, -75.21) (  -0.67, -72.25)  338.28                80
 12/30/2020   18:42:20   (  -0.01, -75.22) (  -0.54, -77.46)  256.18                80
 12/31/2020   18:26:04   (  -0.01, -75.22) (   0.52, -72.88)  266.75                80
 01/02/2021   06:47:33   (   0.01, -75.23) (   0.63, -78.07)  323.41                80
 01/03/2021   06:25:56   (   0.01, -75.23) (  -0.36, -73.48)  199.61                80
 01/04/2021   18:47:33   (  -0.01, -75.24) (  -0.78, -78.70)  394.27                80
 01/05/2021   18:31:16   (  -0.01, -75.25) (   0.22, -74.11)  129.29                80
 01/07/2021   06:52:45   (   0.01, -75.27) (   0.93, -79.30)  459.38                80
 01/08/2021   06:31:09   (   0.02, -75.28) (  -0.13, -74.72)   64.25                80
 01/10/2021   18:33:48   (  -0.01, -75.30) (  -0.02, -75.35)    5.49                80