Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 7 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/28/2023   20:57:44   (   0.01,-104.70) (   0.65,-101.95)  313.81                80
 07/30/2023   09:20:04   (  -0.00,-104.73) (   0.56,-107.33)  295.63                80
 07/31/2023   08:59:00   (   0.00,-104.72) (  -0.43,-102.87)  211.79                80
 08/01/2023   21:21:29   (  -0.00,-104.68) (  -0.82,-108.27)  409.60                80
 08/02/2023   21:05:45   (  -0.00,-104.68) (   0.17,-103.81)   98.23                80
 08/05/2023   09:09:42   (   0.00,-104.71) (   0.04,-104.73)    3.94                80
 08/07/2023   21:11:08   (  -0.01,-104.67) (  -0.23,-105.69)  115.71                80
 08/08/2023   20:55:24   (  -0.01,-104.67) (   0.76,-101.23)  392.44                80
 08/10/2023   09:17:45   (   0.01,-104.72) (   0.42,-106.61)  215.55                80