Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 4 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/16/2023   20:51:32   (  -0.01,-104.73) (   0.65,-101.88)  325.52                80
 04/18/2023   09:13:52   (   0.01,-104.73) (   0.56,-107.25)  287.28                80
 04/19/2023   08:52:49   (   0.01,-104.73) (  -0.41,-102.79)  220.52                80
 04/20/2023   21:15:19   (  -0.01,-104.73) (  -0.78,-108.21)  396.52                80
 04/21/2023   20:59:36   (  -0.00,-104.74) (   0.20,-103.75)  111.55                80
 04/24/2023   09:00:53   (  -0.00,-104.74) (   0.01,-104.67)    7.67                80
 04/26/2023   21:04:59   (  -0.00,-104.74) (  -0.20,-105.64)  102.55                80
 04/27/2023   20:49:16   (  -0.00,-104.74) (   0.79,-101.18)  405.73                80
 04/29/2023   09:11:36   (   0.00,-104.75) (   0.39,-106.56)  205.97                80
 04/30/2023   08:50:33   (   0.01,-104.75) (  -0.60,-102.11)  302.23                80