Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 8 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/18/2020   22:45:40   (  -0.03,-137.19) (  -0.39,-138.87)  190.86                80
 08/19/2020   22:29:23   (  -0.02,-137.19) (   0.63,-134.29)  330.81                80
 08/21/2020   10:48:13   (   0.02,-137.18) (   0.53,-139.48)  262.33                80
 08/22/2020   10:31:57   (   0.02,-137.18) (  -0.48,-134.90)  259.21                80
 08/23/2020   22:50:55   (  -0.02,-137.17) (  -0.66,-140.13)  337.02                80
 08/24/2020   22:34:39   (  -0.02,-137.16) (   0.35,-135.55)  184.07                80
 08/26/2020   10:53:29   (   0.01,-137.14) (   0.81,-140.74)  410.33                80
 08/27/2020   10:37:13   (   0.00,-137.13) (  -0.21,-136.16)  110.01                80
 08/28/2020   22:56:11   (   0.01,-137.11) (  -0.93,-141.39)  487.83                80
 08/29/2020   22:39:54   (   0.01,-137.09) (   0.08,-136.81)   32.59                80