Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 5 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)
 05/07/2023   21:02:40   (   0.00,-104.72) (  -0.05,-104.92)   23.07                80
 05/08/2023   20:46:56   (   0.00,-104.72) (   0.95,-100.47)  484.63                80
 05/10/2023   09:09:15   (  -0.00,-104.72) (   0.26,-105.84)  127.99                80
 05/11/2023   08:48:12   (  -0.00,-104.71) (  -0.75,-101.38)  379.35                80
 05/12/2023   21:10:41   (   0.00,-104.70) (  -0.44,-106.80)  238.96                80
 05/13/2023   20:54:57   (   0.00,-104.70) (   0.51,-102.33)  269.07                80
 05/15/2023   09:17:16   (  -0.00,-104.71) (   0.70,-107.71)  342.25                80
 05/16/2023   08:56:13   (  -0.00,-104.71) (  -0.31,-103.25)  165.60                80
 05/17/2023   21:18:41   (   0.00,-104.69) (  -0.91,-108.66)  452.73                80
 05/18/2023   21:02:57   (   0.01,-104.69) (   0.10,-104.21)   55.40                80