Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/16/2020   22:42:45   (  -0.02,-137.22) (  -0.00,-137.19)    3.00                80
 11/19/2020   10:42:37   (   0.01,-137.19) (   0.17,-137.79)   68.73                80
 11/20/2020   10:26:21   (   0.01,-137.18) (  -0.86,-133.21)  452.46                80
 11/21/2020   22:45:18   (  -0.01,-137.16) (  -0.32,-138.43)  144.97                80
 11/22/2020   22:29:01   (  -0.01,-137.15) (   0.72,-133.85)  376.14                80
 11/24/2020   10:47:51   (   0.01,-137.13) (   0.45,-139.03)  217.14                80
 11/25/2020   10:31:34   (   0.01,-137.12) (  -0.59,-134.45)  303.73                80
 11/26/2020   22:50:32   (  -0.01,-137.09) (  -0.58,-139.67)  294.14                80
 11/27/2020   22:34:15   (  -0.01,-137.07) (   0.46,-135.09)  226.41                80
 11/29/2020   10:53:04   (   0.01,-137.05) (   0.71,-140.28)  368.02                80
 11/30/2020   10:36:47   (   0.01,-137.02) (  -0.27,-135.69)  151.98                80