Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 8 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/10/2023   09:17:44   (  -0.00,-104.72) (   0.43,-106.60)  214.39                80
 08/11/2023   08:56:41   (   0.00,-104.72) (  -0.58,-102.15)  293.41                80
 08/12/2023   21:19:09   (  -0.01,-104.69) (  -0.67,-107.55)  326.10                80
 08/13/2023   21:03:26   (  -0.01,-104.69) (   0.33,-103.09)  182.09                80
 08/15/2023   09:25:45   (   0.02,-104.72) (   0.88,-108.46)  427.25                80
 08/16/2023   09:04:41   (   0.02,-104.72) (  -0.13,-104.01)   80.86                80
 08/18/2023   21:08:46   (  -0.02,-104.70) (  -0.11,-104.95)   30.33                80
 08/19/2023   20:53:03   (  -0.02,-104.70) (   0.90,-100.50)  478.32                80
 08/21/2023   09:15:22   (   0.02,-104.73) (   0.30,-105.87)  130.39                80
 08/22/2023   08:54:19   (   0.02,-104.73) (  -0.72,-101.42)  377.77                80
 08/23/2023   21:16:47   (  -0.03,-104.70) (  -0.52,-106.82)  242.10                80