Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 5 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/08/2020   10:37:31   (  -0.01,-137.18) (  -0.02,-137.21)    2.49                80
 05/10/2020   22:40:14   (   0.01,-137.16) (  -0.12,-137.86)   78.95                80
 05/11/2020   22:23:58   (   0.01,-137.15) (   0.88,-133.27)  441.88                80
 05/13/2020   10:45:28   (  -0.01,-137.14) (   0.27,-138.47)  151.64                80
 05/14/2020   10:23:52   (  -0.01,-137.12) (  -0.73,-133.88)  368.87                80
 05/15/2020   22:45:30   (   0.00,-137.10) (  -0.47,-139.11)  229.61                80
 05/16/2020   22:29:14   (   0.00,-137.08) (   0.59,-134.54)  290.85                80
 05/18/2020   10:50:44   (  -0.00,-137.07) (   0.62,-139.72)  303.11                80
 05/19/2020   10:29:08   (  -0.00,-137.05) (  -0.44,-135.15)  216.96                80