Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 9 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/07/2023   08:59:54   (   0.00,-104.71) (  -0.51,-102.54)  248.13                80
 09/08/2023   21:22:22   (  -0.01,-104.68) (  -0.76,-107.93)  371.04                80
 09/09/2023   21:06:38   (  -0.01,-104.68) (   0.28,-103.48)  137.43                80
 09/11/2023   09:28:56   (   0.01,-104.71) (   0.94,-108.85)  471.39                80
 09/12/2023   09:07:52   (   0.02,-104.71) (  -0.04,-104.38)   37.01                80
 09/14/2023   21:11:56   (  -0.02,-104.69) (  -0.17,-105.33)   73.29                80
 09/15/2023   20:56:11   (  -0.02,-104.69) (   0.82,-100.87)  435.53                80
 09/17/2023   09:18:31   (   0.02,-104.72) (   0.34,-106.24)  172.75                80
 09/18/2023   08:57:26   (   0.02,-104.72) (  -0.65,-101.78)  335.77                80
 09/19/2023   21:19:53   (  -0.02,-104.69) (  -0.58,-107.18)  283.46                80
 09/20/2023   21:04:09   (  -0.02,-104.69) (   0.42,-102.72)  225.08                80