Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 10 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/29/2020   10:40:40   (   0.02,-137.22) (   0.04,-137.41)   22.14                80
 10/31/2020   22:43:20   (  -0.02,-137.20) (  -0.23,-138.05)   96.69                80
 11/01/2020   22:27:04   (  -0.02,-137.20) (   0.81,-133.47)  425.11                80
 11/03/2020   10:45:53   (   0.01,-137.19) (   0.33,-138.66)  166.63                80
 11/04/2020   10:29:37   (   0.02,-137.18) (  -0.70,-134.08)  354.55                80
 11/05/2020   22:48:34   (  -0.01,-137.16) (  -0.51,-139.29)  243.94                80
 11/06/2020   22:32:18   (  -0.01,-137.14) (   0.53,-134.71)  276.72                80
 11/08/2020   10:51:07   (   0.01,-137.12) (   0.62,-139.90)  316.62                80
 11/09/2020   10:34:50   (   0.00,-137.10) (  -0.42,-135.32)  203.67                80