Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 10 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/24/2020   10:38:05   (   0.02,-137.21) (  -0.19,-136.16)  119.19                80
 10/25/2020   22:57:04   (  -0.02,-137.20) (  -0.93,-141.39)  477.14                80
 10/26/2020   22:40:46   (  -0.02,-137.21) (   0.04,-136.80)   45.55                80
 10/29/2020   10:40:39   (   0.02,-137.22) (   0.06,-137.41)   21.94                80
 10/31/2020   22:43:21   (  -0.02,-137.21) (  -0.20,-138.06)   96.76                80
 11/01/2020   22:27:05   (  -0.02,-137.20) (   0.83,-133.48)  425.05                80
 11/03/2020   10:45:53   (   0.01,-137.20) (   0.37,-138.65)  166.37                80
 11/04/2020   10:29:37   (   0.02,-137.19) (  -0.66,-134.07)  354.89                80
 11/05/2020   22:48:35   (  -0.01,-137.16) (  -0.50,-139.30)  243.78                80
 11/06/2020   22:32:18   (  -0.01,-137.15) (   0.54,-134.72)  276.90                80