Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 10 10.  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   22:41:20   (  -0.04,-137.19) (  -0.14,-137.64)   51.32                80
 10/11/2020   22:25:04   (  -0.03,-137.19) (   0.89,-133.06)  470.15                80
 10/13/2020   10:43:53   (   0.03,-137.17) (   0.25,-138.25)  123.02                80
 10/14/2020   10:27:37   (   0.03,-137.16) (  -0.77,-133.67)  398.16                80
 10/15/2020   22:46:35   (  -0.02,-137.15) (  -0.41,-138.90)  199.03                80
 10/16/2020   22:30:19   (  -0.03,-137.14) (   0.62,-134.31)  321.92                80
 10/18/2020   10:49:07   (   0.02,-137.11) (   0.58,-139.49)  272.13                80
 10/19/2020   10:32:50   (   0.03,-137.09) (  -0.45,-134.91)  248.25                80
 10/20/2020   22:51:49   (  -0.02,-137.07) (  -0.73,-140.14)  350.47                80
 10/21/2020   22:35:32   (  -0.02,-137.04) (   0.30,-135.55)  169.48                80
 10/23/2020   10:54:21   (   0.02,-137.01) (   0.85,-140.75)  425.87                80