Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 10 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/10/2020   22:41:21   (  -0.03,-137.19) (  -0.12,-137.65)   52.18                80
 10/11/2020   22:25:04   (  -0.03,-137.18) (   0.91,-133.07)  469.04                80
 10/13/2020   10:43:53   (   0.02,-137.16) (   0.29,-138.25)  124.34                80
 10/14/2020   10:27:36   (   0.02,-137.15) (  -0.74,-133.67)  396.59                80
 10/15/2020   22:46:35   (  -0.02,-137.13) (  -0.39,-138.90)  201.25                80
 10/16/2020   22:30:18   (  -0.02,-137.12) (   0.58,-134.31)  319.45                80
 10/18/2020   10:49:07   (   0.02,-137.09) (   0.56,-139.50)  274.79                80
 10/19/2020   10:32:51   (   0.02,-137.07) (  -0.47,-134.92)  245.30                80
 10/20/2020   22:51:49   (  -0.02,-137.03) (  -0.72,-140.14)  354.04                80
 10/21/2020   22:35:33   (  -0.02,-137.01) (   0.31,-135.56)  165.61                80