Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 4 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2023   21:15:19   (  -0.00,-104.73) (  -0.78,-108.21)  396.36                80
 04/21/2023   20:59:36   (  -0.00,-104.74) (   0.19,-103.75)  112.29                80
 04/23/2023   09:21:56   (   0.00,-104.76) (   1.00,-109.13)  498.91                80
 04/24/2023   09:00:53   (   0.00,-104.76) (  -0.05,-104.69)    9.93                80
 04/26/2023   21:04:59   (   0.00,-104.77) (  -0.19,-105.64)   99.11                80
 04/27/2023   20:49:16   (  -0.00,-104.78) (   0.80,-101.18)  409.63                80
 04/29/2023   09:11:35   (   0.01,-104.80) (   0.43,-106.55)  200.74                80
 04/30/2023   08:50:33   (   0.01,-104.80) (  -0.62,-102.11)  307.97                80
 05/01/2023   21:13:01   (  -0.01,-104.81) (  -0.64,-107.51)  308.71                80
 05/02/2023   20:57:17   (  -0.01,-104.82) (   0.36,-103.05)  200.25                80