Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 6 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/25/2023   21:04:25   (   0.00,-104.71) (   0.16,-104.03)   78.34                80
 06/28/2023   09:08:24   (  -0.01,-104.74) (   0.07,-104.95)   24.59                80
 06/29/2023   08:47:21   (  -0.01,-104.74) (  -0.95,-100.50)  483.21                80
 06/30/2023   21:09:50   (   0.01,-104.72) (  -0.26,-105.91)  136.18                80
 07/01/2023   20:54:08   (   0.01,-104.72) (   0.76,-101.46)  371.40                80
 07/03/2023   09:16:29   (  -0.02,-104.74) (   0.47,-106.84)  239.87                80
 07/04/2023   08:55:27   (  -0.02,-104.74) (  -0.55,-102.39)  267.30                80
 07/05/2023   21:17:55   (   0.02,-104.70) (  -0.70,-107.79)  353.01                80
 07/06/2023   21:02:13   (   0.02,-104.70) (   0.32,-103.35)  154.74                80
 07/08/2023   09:24:34   (  -0.03,-104.73) (   0.90,-108.72)  455.43                80