Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 7 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2023   20:51:55   (   0.01,-104.71) (   0.91,-100.77)  449.63                80
 07/14/2023   09:14:17   (  -0.01,-104.68) (   0.29,-106.15)  167.26                80
 07/15/2023   08:53:13   (  -0.01,-104.65) (  -0.68,-101.69)  337.21                80
 07/16/2023   21:15:41   (   0.01,-104.59) (  -0.58,-107.09)  286.02                80
 07/17/2023   20:59:59   (   0.01,-104.56) (   0.45,-102.65)  218.81                80
 07/19/2023   09:22:19   (  -0.01,-104.54) (   0.80,-108.01)  397.10                80
 07/20/2023   09:01:17   (  -0.01,-104.51) (  -0.23,-103.57)  107.62                80
 07/22/2023   21:05:23   (   0.01,-104.42) (   0.01,-104.52)   10.99                80
 07/23/2023   20:49:39   (   0.01,-104.40) (   0.99,-100.06)  494.60                80
 07/25/2023   09:11:59   (  -0.01,-104.38) (   0.25,-105.43)  120.57                80
 07/26/2023   08:50:57   (  -0.00,-104.35) (  -0.79,-100.99)  384.28                80