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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/18/2020   10:49:08   (   0.03,-137.21) (   0.52,-139.50)  260.75                80
 10/19/2020   10:32:51   (   0.03,-137.21) (  -0.51,-134.92)  261.15                80
 10/20/2020   22:51:49   (  -0.03,-137.19) (  -0.67,-140.14)  336.23                80
 10/21/2020   22:35:33   (  -0.03,-137.18) (   0.36,-135.56)  185.18                80
 10/23/2020   10:54:21   (   0.02,-137.17) (   0.83,-140.74)  407.10                80
 10/24/2020   10:38:05   (   0.02,-137.16) (  -0.20,-136.16)  114.03                80
 10/25/2020   22:57:03   (  -0.01,-137.14) (  -0.98,-141.39)  484.02                80
 10/26/2020   22:40:47   (  -0.01,-137.13) (   0.06,-136.81)   37.06                80
 10/29/2020   10:40:39   (   0.01,-137.11) (   0.05,-137.42)   34.82                80
 10/30/2020   10:24:22   (   0.01,-137.09) (  -0.92,-132.82)  486.08                80