Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 9 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/14/2023   21:11:57   (   0.00,-104.68) (  -0.12,-105.34)   74.42                80
 09/15/2023   20:56:12   (   0.00,-104.68) (   0.87,-100.87)  434.21                80
 09/17/2023   09:18:30   (  -0.00,-104.71) (   0.34,-106.24)  174.41                80
 09/18/2023   08:57:26   (  -0.00,-104.71) (  -0.65,-101.78)  333.87                80
 09/19/2023   21:19:53   (   0.00,-104.68) (  -0.59,-107.18)  285.79                80
 09/20/2023   21:04:10   (  -0.00,-104.67) (   0.47,-102.73)  222.51                80
 09/22/2023   09:26:27   (   0.00,-104.70) (   0.80,-108.08)  386.46                80
 09/23/2023   09:05:24   (   0.01,-104.69) (  -0.26,-103.63)  121.43                80
 09/24/2023   21:27:50   (  -0.01,-104.65) (  -1.01,-109.02)  499.04                80
 09/25/2023   21:12:05   (  -0.02,-104.64) (  -0.01,-104.56)    9.10                80