Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 8 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/16/2023   09:04:42   (   0.00,-104.72) (  -0.17,-104.02)   80.18                80
 08/18/2023   21:08:47   (  -0.01,-104.69) (  -0.07,-104.96)   31.37                80
 08/19/2023   20:53:03   (  -0.01,-104.69) (   0.94,-100.51)  476.84                80
 08/21/2023   09:15:23   (   0.01,-104.72) (   0.25,-105.88)  132.45                80
 08/22/2023   08:54:19   (   0.00,-104.71) (  -0.76,-101.43)  375.43                80
 08/23/2023   21:16:48   (  -0.00,-104.68) (  -0.48,-106.83)  244.83                80
 08/24/2023   21:01:04   (  -0.00,-104.68) (   0.54,-102.37)  263.00                80
 08/26/2023   09:23:22   (   0.00,-104.70) (   0.71,-107.73)  346.65                80
 08/27/2023   09:02:19   (   0.00,-104.69) (  -0.31,-103.28)  160.75                80
 08/28/2023   21:24:47   (  -0.01,-104.65) (  -0.92,-108.69)  460.43                80
 08/29/2023   21:09:04   (  -0.01,-104.64) (   0.10,-104.23)   47.34                80