Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 7 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/21/2023   21:23:46   (   0.02,-104.69) (  -0.94,-108.99)  489.39                80
 07/22/2023   21:08:03   (   0.01,-104.68) (   0.04,-104.53)   17.60                80
 07/25/2023   09:12:01   (  -0.01,-104.68) (   0.15,-105.45)   87.56                80
 07/26/2023   08:50:57   (  -0.01,-104.67) (  -0.83,-100.99)  419.02                80
 07/27/2023   21:13:26   (   0.01,-104.62) (  -0.42,-106.39)  202.50                80
 07/28/2023   20:57:43   (   0.00,-104.61) (   0.62,-101.95)  304.11                80
 07/30/2023   09:20:03   (   0.00,-104.62) (   0.59,-107.32)  308.08                80
 07/31/2023   08:59:00   (   0.00,-104.60) (  -0.40,-102.86)  198.07                80
 08/01/2023   21:21:28   (  -0.01,-104.54) (  -0.85,-108.27)  424.52                80
 08/02/2023   21:05:45   (  -0.01,-104.53) (   0.15,-103.81)   81.96                80