Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 6 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/11/2023   09:20:49   (   0.01,-104.72) (   0.78,-108.19)  395.55                80
 06/12/2023   08:59:47   (   0.01,-104.72) (  -0.21,-103.74)  111.98                80
 06/14/2023   21:06:34   (  -0.01,-104.71) (   0.01,-104.70)    2.26                80
 06/17/2023   09:10:33   (   0.01,-104.73) (   0.25,-105.62)  102.41                80
 06/18/2023   08:49:32   (   0.02,-104.73) (  -0.81,-101.18)  405.14                80
 06/19/2023   21:12:01   (  -0.02,-104.71) (  -0.42,-106.59)  214.20                80
 06/20/2023   20:56:19   (  -0.02,-104.71) (   0.58,-102.14)  293.72                80
 06/22/2023   09:18:40   (   0.01,-104.74) (   0.67,-107.51)  316.82                80
 06/23/2023   08:57:38   (   0.01,-104.74) (  -0.39,-103.08)  190.96                80