Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 9 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/19/2020   06:37:46   (  -0.03, -75.20) (   0.16, -76.16)  108.95                80
 09/20/2020   06:16:09   (  -0.03, -75.21) (  -0.86, -71.58)  414.26                80
 09/21/2020   18:37:48   (   0.03, -75.24) (  -0.31, -76.80)  178.31                80
 09/22/2020   18:21:31   (   0.04, -75.25) (   0.71, -72.22)  345.06                80
 09/24/2020   06:43:01   (  -0.04, -75.26) (   0.46, -77.41)  245.78                80
 09/25/2020   06:21:25   (  -0.04, -75.27) (  -0.62, -72.84)  277.80                80
 09/26/2020   18:43:03   (   0.05, -75.31) (  -0.55, -78.07)  314.07                80
 09/27/2020   18:26:47   (   0.05, -75.33) (   0.47, -73.49)  210.11                80
 09/29/2020   06:48:16   (  -0.06, -75.35) (   0.70, -78.67)  378.97                80
 09/30/2020   06:26:40   (  -0.06, -75.37) (  -0.32, -74.09)  145.70                80
 10/01/2020   18:48:19   (   0.06, -75.42) (  -0.79, -79.33)  444.64                80