Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 6 11.  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   (  -0.00,-104.72) (   0.78,-108.19)  395.84                80
 06/12/2023   08:59:47   (  -0.00,-104.72) (  -0.22,-103.74)  111.65                80
 06/14/2023   21:06:34   (   0.00,-104.71) (   0.02,-104.70)    1.74                80
 06/17/2023   09:10:34   (  -0.00,-104.73) (   0.18,-105.64)  103.03                80
 06/18/2023   08:49:32   (  -0.00,-104.73) (  -0.82,-101.19)  404.40                80
 06/19/2023   21:12:01   (   0.01,-104.71) (  -0.41,-106.59)  214.94                80
 06/20/2023   20:56:19   (   0.01,-104.71) (   0.59,-102.14)  292.87                80
 06/22/2023   09:18:41   (  -0.01,-104.74) (   0.60,-107.53)  317.85                80
 06/23/2023   08:57:39   (  -0.01,-104.74) (  -0.40,-103.08)  189.86                80
 06/24/2023   21:20:08   (   0.01,-104.72) (  -0.82,-108.49)  429.38                80