Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 2 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/16/2020   22:33:52   (  -0.03,-137.22) (   0.29,-135.84)  157.76                80
 02/18/2020   10:55:22   (   0.03,-137.20) (   0.87,-141.03)  435.86                80
 02/19/2020   10:33:45   (   0.04,-137.20) (  -0.11,-136.45)   85.15                80
 02/21/2020   22:39:09   (  -0.04,-137.19) (  -0.05,-137.10)    9.51                80
 02/24/2020   10:41:44   (   0.04,-137.16) (   0.18,-137.72)   64.82                80
 02/25/2020   10:20:09   (   0.04,-137.15) (  -0.86,-133.15)  455.62                80
 02/26/2020   22:41:48   (  -0.04,-137.13) (  -0.33,-138.38)  142.22                80
 02/27/2020   22:25:32   (  -0.04,-137.12) (   0.71,-133.81)  378.04                80
 02/29/2020   10:47:03   (   0.04,-137.09) (   0.46,-139.00)  217.33                80