Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2021 11 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/14/2021   22:54:06   (  -0.01,-137.21) (  -0.21,-138.18)  109.85                80
 11/15/2021   22:37:47   (  -0.01,-137.22) (   0.82,-133.59)  414.25                80
 11/17/2021   10:56:32   (   0.01,-137.23) (   0.38,-138.74)  173.59                80
 11/18/2021   10:40:14   (   0.01,-137.23) (  -0.66,-134.15)  350.12                80
 11/19/2021   22:59:09   (  -0.01,-137.22) (  -0.50,-139.36)  244.32                80
 11/20/2021   22:42:51   (  -0.01,-137.21) (   0.54,-134.76)  278.90                80
 11/22/2021   11:01:37   (   0.01,-137.21) (   0.61,-139.93)  310.39                80
 11/23/2021   10:45:19   (   0.01,-137.20) (  -0.43,-135.34)  212.29                80
 11/24/2021   23:04:13   (  -0.01,-137.17) (  -0.77,-140.54)  383.48                80
 11/25/2021   22:47:54   (  -0.01,-137.16) (   0.26,-135.94)  138.86                80
 11/27/2021   11:06:41   (   0.00,-137.15) (   0.89,-141.11)  451.52                80