Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 9 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/15/2023   20:56:12   (  -0.01,-104.68) (   0.84,-100.87)  434.57                80
 09/17/2023   09:18:30   (   0.01,-104.71) (   0.37,-106.23)  173.98                80
 09/18/2023   08:57:27   (   0.01,-104.71) (  -0.68,-101.78)  334.31                80
 09/19/2023   21:19:54   (  -0.01,-104.68) (  -0.55,-107.18)  285.34                80
 09/20/2023   21:04:09   (  -0.01,-104.68) (   0.44,-102.72)  222.94                80
 09/22/2023   09:26:28   (   0.01,-104.70) (   0.76,-108.09)  385.95                80
 09/23/2023   09:05:23   (   0.01,-104.69) (  -0.24,-103.63)  121.89                80
 09/24/2023   21:27:49   (  -0.01,-104.65) (  -1.03,-109.02)  498.56                80
 09/25/2023   21:12:06   (  -0.02,-104.65) (   0.03,-104.57)   10.13                80
 09/28/2023   09:15:59   (   0.02,-104.67) (   0.23,-105.46)   90.68                80