Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 10 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/26/2020   22:40:47   (  -0.02,-137.21) (   0.10,-136.81)   45.71                80
 10/29/2020   10:40:39   (   0.02,-137.22) (   0.06,-137.41)   21.96                80
 10/31/2020   22:43:21   (  -0.02,-137.20) (  -0.20,-138.05)   96.76                80
 11/01/2020   22:27:05   (  -0.02,-137.20) (   0.83,-133.47)  425.02                80
 11/03/2020   10:45:53   (   0.01,-137.20) (   0.37,-138.65)  166.53                80
 11/04/2020   10:29:36   (   0.02,-137.19) (  -0.67,-134.07)  354.68                80
 11/05/2020   22:48:35   (  -0.01,-137.16) (  -0.49,-139.30)  243.95                80
 11/06/2020   22:32:18   (  -0.01,-137.14) (   0.55,-134.72)  276.70                80
 11/08/2020   10:51:07   (   0.01,-137.13) (   0.60,-139.91)  316.47                80