Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 9 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2023   09:28:57   (  -0.01,-104.71) (   0.92,-108.85)  472.01                80
 09/12/2023   09:07:52   (  -0.01,-104.71) (  -0.07,-104.39)   36.34                80
 09/14/2023   21:11:56   (   0.00,-104.69) (  -0.15,-105.33)   73.89                80
 09/15/2023   20:56:12   (   0.00,-104.69) (   0.84,-100.87)  434.90                80
 09/17/2023   09:18:31   (  -0.00,-104.72) (   0.31,-106.25)  173.63                80
 09/18/2023   08:57:27   (  -0.00,-104.72) (  -0.67,-101.79)  334.84                80
 09/19/2023   21:19:54   (   0.00,-104.69) (  -0.56,-107.19)  284.42                80
 09/20/2023   21:04:09   (   0.00,-104.69) (   0.44,-102.72)  224.00                80
 09/22/2023   09:26:28   (  -0.01,-104.72) (   0.78,-108.09)  384.97                80
 09/23/2023   09:05:24   (  -0.01,-104.71) (  -0.28,-103.64)  123.01                80