Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2021 10 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/30/2021   22:41:32   (  -0.02,-137.22) (   0.54,-134.62)  296.11                80
 11/01/2021   11:00:18   (   0.01,-137.22) (   0.59,-139.79)  293.53                80
 11/02/2021   10:44:00   (   0.02,-137.21) (  -0.43,-135.20)  229.52                80
 11/03/2021   23:02:55   (  -0.01,-137.20) (  -0.75,-140.40)  365.12                80
 11/04/2021   22:46:36   (  -0.02,-137.19) (   0.28,-135.81)  157.52                80
 11/06/2021   11:05:23   (   0.01,-137.17) (   0.86,-140.98)  433.53                80
 11/07/2021   10:49:04   (   0.02,-137.16) (  -0.17,-136.39)   88.35                80
 11/09/2021   22:51:41   (  -0.01,-137.11) (   0.02,-137.00)   13.37                80
 11/12/2021   10:51:28   (   0.01,-137.06) (   0.15,-137.56)   57.61                80