Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 4 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/02/2023   09:08:00   (  -0.01,-104.76) (   0.28,-106.04)  146.20                80
 04/03/2023   08:46:57   (  -0.01,-104.76) (  -0.73,-101.59)  361.50                80
 04/04/2023   21:09:27   (   0.01,-104.76) (  -0.48,-107.01)  255.80                80
 04/05/2023   20:53:45   (   0.01,-104.77) (   0.53,-102.56)  252.32                80
 04/07/2023   09:16:05   (  -0.01,-104.78) (   0.72,-107.93)  359.89                80
 04/08/2023   08:55:03   (  -0.00,-104.78) (  -0.30,-103.48)  147.80                80
 04/09/2023   21:17:32   (   0.01,-104.77) (  -0.95,-108.89)  470.40                80
 04/10/2023   21:01:50   (   0.01,-104.77) (   0.07,-104.44)   37.18                80
 04/13/2023   09:05:47   (  -0.02,-104.77) (   0.13,-105.37)   68.32                80
 04/14/2023   08:44:45   (  -0.02,-104.77) (  -0.90,-100.92)  438.90                80