Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 4 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/19/2023   08:52:49   (   0.00,-104.73) (  -0.44,-102.80)  220.49                80
 04/20/2023   21:15:19   (  -0.00,-104.74) (  -0.81,-108.21)  395.90                80
 04/21/2023   20:59:36   (  -0.00,-104.75) (   0.23,-103.76)  112.79                80
 04/23/2023   09:21:57   (   0.00,-104.76) (   0.96,-109.14)  498.33                80
 04/24/2023   09:00:53   (  -0.00,-104.77) (  -0.02,-104.68)   10.00                80
 04/26/2023   21:04:59   (  -0.00,-104.78) (  -0.22,-105.63)   98.26                80
 04/27/2023   20:49:16   (  -0.01,-104.79) (   0.82,-101.19)  410.67                80
 04/29/2023   09:11:36   (   0.02,-104.81) (   0.41,-106.56)  199.63                80
 04/30/2023   08:50:32   (   0.02,-104.81) (  -0.58,-102.10)  309.11                80
 05/01/2023   21:13:02   (  -0.02,-104.82) (  -0.63,-107.51)  307.40                80