Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 5 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/19/2020   10:29:09   (  -0.01,-137.19) (  -0.48,-135.15)  232.62                80
 05/20/2020   22:53:27   (   0.00,-137.20) (  -0.73,-140.37)  362.50                80
 05/21/2020   22:31:52   (   0.01,-137.20) (   0.33,-135.80)  159.69                80
 05/23/2020   10:56:01   (  -0.01,-137.20) (   0.87,-140.99)  431.97                80
 05/24/2020   10:34:26   (  -0.01,-137.20) (  -0.19,-136.42)   89.63                80
 05/26/2020   22:39:49   (   0.00,-137.18) (   0.04,-137.06)   13.90                80
 05/29/2020   10:42:22   (  -0.00,-137.16) (   0.09,-137.68)   58.45                80
 05/30/2020   10:20:46   (   0.00,-137.15) (  -0.91,-133.09)  462.28                80
 05/31/2020   22:42:25   (  -0.00,-137.13) (  -0.24,-138.33)  136.03                80
 06/01/2020   22:26:09   (  -0.00,-137.11) (   0.76,-133.74)  384.43                80