Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 4 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/13/2023   09:05:48   (   0.00,-104.72) (   0.12,-105.37)   73.31                80
 04/14/2023   08:44:45   (   0.01,-104.72) (  -0.85,-100.91)  433.89                80
 04/15/2023   21:07:15   (  -0.01,-104.72) (  -0.35,-106.33)  183.66                80
 04/16/2023   20:51:32   (  -0.01,-104.72) (   0.61,-101.87)  324.08                80
 04/18/2023   09:13:52   (   0.00,-104.71) (   0.60,-107.25)  289.35                80
 04/19/2023   08:52:50   (  -0.02,-104.71) (  -0.43,-102.80)  217.63                80
 04/20/2023   21:15:20   (   0.03,-104.71) (  -0.76,-108.22)  400.16                80
 04/21/2023   20:59:36   (   0.03,-104.71) (   0.21,-103.76)  107.70                80
 04/24/2023   09:03:34   (  -0.03,-104.71) (  -0.05,-104.69)    2.90                80