Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 9 13.  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   21:11:56   (   0.01,-104.69) (  -0.13,-105.34)   73.99                80
 09/15/2023   20:56:12   (   0.00,-104.69) (   0.86,-100.87)  434.79                80
 09/17/2023   09:18:30   (  -0.00,-104.72) (   0.36,-106.24)  173.73                80
 09/18/2023   08:57:27   (  -0.01,-104.72) (  -0.70,-101.79)  334.73                80
 09/19/2023   21:19:54   (   0.01,-104.69) (  -0.54,-107.19)  284.61                80
 09/20/2023   21:04:10   (   0.01,-104.69) (   0.46,-102.73)  223.76                80
 09/22/2023   09:26:28   (  -0.02,-104.71) (   0.75,-108.09)  385.25                80
 09/23/2023   09:05:23   (  -0.02,-104.71) (  -0.25,-103.63)  122.67                80
 09/24/2023   21:27:51   (   0.02,-104.67) (  -0.96,-109.03)  497.50                80
 09/25/2023   21:12:06   (   0.01,-104.67) (   0.05,-104.57)   10.88                80