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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/08/2023   20:55:25   (   0.01,-104.70) (   0.78,-101.23)  395.35                80
 08/10/2023   09:17:45   (  -0.01,-104.73) (   0.39,-106.61)  214.51                80
 08/11/2023   08:56:41   (  -0.01,-104.72) (  -0.62,-102.16)  293.24                80
 08/12/2023   21:19:10   (   0.02,-104.69) (  -0.63,-107.56)  326.95                80
 08/13/2023   21:03:26   (   0.02,-104.69) (   0.37,-103.10)  181.12                80
 08/15/2023   09:25:45   (  -0.03,-104.72) (   0.84,-108.47)  427.97                80
 08/16/2023   09:04:42   (  -0.03,-104.72) (  -0.17,-104.02)   80.11                80
 08/18/2023   21:08:47   (   0.03,-104.70) (  -0.06,-104.97)   31.61                80
 08/19/2023   20:53:03   (   0.03,-104.70) (   0.96,-100.51)  477.10                80
 08/21/2023   09:15:23   (  -0.03,-104.74) (   0.24,-105.88)  131.22                80