Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 6 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/14/2023   21:06:34   (   0.01,-104.71) (  -0.00,-104.70)    1.16                80
 06/17/2023   09:10:34   (  -0.01,-104.72) (   0.20,-105.63)  104.11                80
 06/18/2023   08:49:32   (  -0.01,-104.72) (  -0.80,-101.18)  403.04                80
 06/19/2023   21:12:01   (   0.01,-104.70) (  -0.44,-106.59)  216.15                80
 06/20/2023   20:56:19   (   0.02,-104.70) (   0.62,-102.15)  291.44                80
 06/22/2023   09:18:41   (  -0.02,-104.72) (   0.63,-107.52)  320.11                80
 06/23/2023   08:57:38   (  -0.01,-104.72) (  -0.38,-103.07)  187.56                80
 06/24/2023   21:20:07   (   0.01,-104.70) (  -0.85,-108.48)  431.35                80
 06/25/2023   21:04:25   (   0.00,-104.70) (   0.16,-104.03)   76.71                80