Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 9 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/04/2020   22:26:12   (  -0.05,-137.17) (   0.79,-133.47)  422.67                80
 09/06/2020   10:45:02   (   0.05,-137.16) (   0.41,-138.65)  170.57                80
 09/07/2020   10:26:06   (   0.05,-137.15) (  -0.67,-134.08)  350.41                80
 09/08/2020   22:47:44   (  -0.04,-137.13) (  -0.54,-139.30)  247.41                80
 09/09/2020   22:31:27   (  -0.04,-137.11) (   0.48,-134.71)  273.02                80
 09/11/2020   10:50:17   (   0.04,-137.09) (   0.66,-139.91)  321.75                80
 09/12/2020   10:34:01   (   0.03,-137.07) (  -0.36,-135.33)  198.04                80
 09/13/2020   22:52:59   (  -0.02,-137.03) (  -0.79,-140.56)  401.67                80
 09/14/2020   22:36:43   (  -0.02,-137.01) (   0.23,-135.98)  117.73                80
 09/16/2020   10:55:32   (   0.01,-136.97) (   0.96,-141.16)  478.19                80
 09/17/2020   10:39:16   (   0.01,-136.94) (  -0.06,-136.58)   41.00                80