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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/12/2021   10:51:28   (   0.01,-137.20) (   0.09,-137.56)   41.56                80
 11/13/2021   10:35:10   (   0.01,-137.20) (  -0.94,-132.97)  481.71                80
 11/14/2021   22:54:05   (  -0.01,-137.19) (  -0.23,-138.18)  112.90                80
 11/15/2021   22:37:47   (  -0.01,-137.18) (   0.81,-133.58)  410.30                80
 11/17/2021   10:56:32   (   0.01,-137.18) (   0.39,-138.74)  178.97                80
 11/18/2021   10:40:14   (   0.01,-137.17) (  -0.65,-134.15)  343.86                80
 11/19/2021   22:59:09   (  -0.01,-137.15) (  -0.51,-139.36)  251.79                80
 11/20/2021   22:42:50   (  -0.01,-137.13) (   0.53,-134.76)  270.52                80
 11/22/2021   11:01:37   (   0.01,-137.12) (   0.61,-139.93)  320.25                80
 11/23/2021   10:45:17   (   0.01,-137.10) (  -0.37,-135.33)  201.56                80
 11/24/2021   23:04:13   (  -0.00,-137.07) (  -0.77,-140.54)  395.41                80