Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 7 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2023   02:14:53   (   0.33,-179.65) (  -0.03, 178.62)  197.06                80
 07/13/2023   01:53:54   (   0.31, 179.34) (   1.17,-176.97)  421.21                80
 07/14/2023   14:19:01   (  -0.34, 177.79) (  -0.32, 177.57)   25.45                80
 07/16/2023   02:41:36   (   0.37, 176.23) (  -0.59, 172.09)  473.65                80
 07/17/2023   02:20:36   (   0.35, 175.23) (   0.61, 176.50)  144.21                80
 07/18/2023   14:45:43   (  -0.38, 173.68) (   0.23, 171.03)  302.26                80
 07/19/2023   14:24:44   (  -0.36, 172.67) (  -0.98, 175.44)  315.31                80
 07/21/2023   02:49:59   (   0.39, 171.11) (   0.13, 169.95)  132.99                80
 07/22/2023   02:29:00   (   0.37, 170.11) (   1.34, 174.36)  484.87                80
 07/23/2023   14:51:26   (  -0.40, 168.56) (  -0.45, 168.91)   38.63                80