Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 11 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/24/2020   10:47:51   (   0.00,-137.23) (   0.43,-139.03)  205.80                80
 11/25/2020   10:31:34   (   0.01,-137.24) (  -0.61,-134.45)  317.21                80
 11/26/2020   22:50:31   (  -0.00,-137.23) (  -0.57,-139.67)  278.41                80
 11/27/2020   22:34:15   (  -0.01,-137.23) (   0.48,-135.09)  244.26                80
 11/29/2020   10:53:04   (   0.00,-137.24) (   0.69,-140.28)  346.08                80
 11/30/2020   10:36:48   (   0.01,-137.24) (  -0.36,-135.70)  176.04                80
 12/01/2020   22:55:44   (  -0.01,-137.22) (  -0.86,-140.91)  421.01                80
 12/02/2020   22:39:28   (  -0.01,-137.21) (   0.18,-136.33)  100.58                80
 12/04/2020   10:58:17   (   0.01,-137.21) (   0.99,-141.51)  491.40                80
 12/05/2020   10:42:00   (   0.01,-137.19) (  -0.06,-136.93)   29.67                80
 12/07/2020   22:42:00   (  -0.00,-137.15) (  -0.10,-137.56)   47.85                80