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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/17/2020   10:35:18   (  -0.02,-137.19) (  -0.13,-136.72)   53.18                80
 04/19/2020   22:38:01   (   0.01,-137.21) (  -0.00,-137.38)   18.61                80
 04/22/2020   10:43:16   (  -0.01,-137.22) (   0.14,-137.99)   88.21                80
 04/23/2020   10:21:40   (  -0.02,-137.22) (  -0.85,-133.41)  433.67                80
 04/24/2020   22:43:18   (   0.01,-137.22) (  -0.33,-138.63)  161.97                80
 04/25/2020   22:27:03   (   0.01,-137.22) (   0.72,-134.06)  359.53                80
 04/27/2020   10:48:33   (  -0.01,-137.20) (   0.47,-139.25)  233.95                80
 04/28/2020   10:26:57   (  -0.01,-137.19) (  -0.59,-134.68)  286.89                80
 04/29/2020   22:48:36   (   0.01,-137.18) (  -0.59,-139.91)  310.58                80
 04/30/2020   22:32:19   (   0.00,-137.17) (   0.41,-135.32)  209.95                80