Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 9 11.  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   09:28:56   (  -0.02,-104.71) (   0.94,-108.85)  472.31                80
 09/12/2023   09:07:53   (  -0.02,-104.71) (  -0.10,-104.40)   35.92                80
 09/14/2023   21:11:57   (   0.02,-104.69) (  -0.11,-105.34)   74.47                80
 09/15/2023   20:56:12   (   0.02,-104.69) (   0.88,-100.88)  434.29                80
 09/17/2023   09:18:31   (  -0.02,-104.72) (   0.34,-106.24)  174.33                80
 09/18/2023   08:57:27   (  -0.02,-104.72) (  -0.71,-101.79)  334.10                80
 09/19/2023   21:19:54   (   0.03,-104.69) (  -0.53,-107.19)  285.20                80
 09/20/2023   21:04:10   (   0.03,-104.69) (   0.47,-102.73)  223.14                80
 09/22/2023   09:26:28   (  -0.03,-104.71) (   0.75,-108.10)  385.92                80
 09/23/2023   09:05:25   (  -0.04,-104.71) (  -0.31,-103.65)  121.94                80
 09/24/2023   21:27:51   (   0.04,-104.67) (  -0.97,-109.04)  498.33                80