Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 10 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/06/2023   21:09:32   (  -0.01,-104.69) (   0.23,-103.78)  104.39                80
 10/09/2023   09:10:45   (  -0.00,-104.71) (  -0.02,-104.68)    4.23                80
 10/11/2023   21:14:46   (   0.01,-104.69) (  -0.18,-105.62)  105.24                80
 10/12/2023   20:59:00   (   0.00,-104.69) (   0.81,-101.15)  404.17                80
 10/14/2023   09:21:18   (   0.01,-104.72) (   0.42,-106.51)  203.58                80
 10/15/2023   09:00:12   (   0.02,-104.72) (  -0.57,-102.04)  305.63                80
 10/16/2023   21:22:37   (  -0.03,-104.69) (  -0.64,-107.43)  312.32                80
 10/17/2023   21:06:52   (  -0.03,-104.69) (   0.36,-102.97)  196.76                80
 10/19/2023   09:29:09   (   0.03,-104.72) (   0.85,-108.33)  411.38                80