Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 9 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/06/2020   10:47:42   (   0.06,-137.19) (   0.40,-138.65)  166.76                80
 09/07/2020   10:26:06   (   0.06,-137.21) (  -0.63,-134.07)  357.04                80
 09/08/2020   22:47:44   (  -0.05,-137.24) (  -0.53,-139.30)  235.25                80
 09/09/2020   22:31:27   (  -0.05,-137.25) (   0.49,-134.72)  288.09                80
 09/11/2020   10:52:58   (   0.05,-137.25) (   0.64,-139.92)  303.27                80
 09/12/2020   10:31:21   (   0.04,-137.26) (  -0.38,-135.33)  219.39                80
 09/13/2020   22:52:59   (  -0.04,-137.27) (  -0.78,-140.56)  374.85                80
 09/14/2020   22:36:43   (  -0.03,-137.28) (   0.25,-135.98)  147.49                80
 09/16/2020   10:58:13   (   0.02,-137.27) (   0.88,-141.18)  444.96                80
 09/17/2020   10:36:37   (   0.02,-137.27) (  -0.14,-136.60)   77.10                80