Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 8 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/11/2023   08:56:41   (   0.00,-104.72) (  -0.57,-102.15)  293.45                80
 08/12/2023   21:19:09   (  -0.01,-104.69) (  -0.68,-107.55)  326.08                80
 08/13/2023   21:03:25   (  -0.01,-104.69) (   0.33,-103.09)  182.12                80
 08/15/2023   09:25:45   (   0.02,-104.72) (   0.89,-108.46)  427.23                80
 08/16/2023   09:04:41   (   0.02,-104.72) (  -0.12,-104.01)   80.90                80
 08/18/2023   21:08:47   (  -0.02,-104.70) (  -0.06,-104.97)   30.28                80
 08/19/2023   20:53:04   (  -0.02,-104.70) (   0.95,-100.51)  478.31                80
 08/21/2023   09:15:22   (   0.02,-104.73) (   0.31,-105.87)  130.43                80
 08/22/2023   08:54:18   (   0.02,-104.73) (  -0.71,-101.41)  377.75                80
 08/23/2023   21:16:47   (  -0.03,-104.70) (  -0.53,-106.82)  242.16                80
 08/24/2023   21:01:03   (  -0.03,-104.70) (   0.48,-102.36)  266.00                80