Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/03/2020   10:45:53   (   0.02,-137.22) (   0.35,-138.65)  163.60                80
 11/04/2020   10:29:36   (   0.02,-137.21) (  -0.68,-134.07)  358.47                80
 11/05/2020   22:48:35   (  -0.02,-137.20) (  -0.48,-139.30)  238.10                80
 11/06/2020   22:32:18   (  -0.02,-137.20) (   0.56,-134.72)  283.52                80
 11/08/2020   10:51:06   (   0.01,-137.19) (   0.65,-139.89)  308.95                80
 11/09/2020   10:34:50   (   0.01,-137.18) (  -0.39,-135.31)  212.24                80
 11/10/2020   22:53:48   (  -0.01,-137.16) (  -0.76,-140.54)  385.45                80
 11/11/2020   22:37:32   (  -0.01,-137.14) (   0.28,-135.96)  135.56                80
 11/13/2020   10:56:20   (   0.01,-137.13) (   0.93,-141.14)  457.76                80
 11/14/2020   10:40:04   (   0.01,-137.11) (  -0.11,-136.56)   62.73                80