Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 7 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/13/2023   01:53:54   (   0.31, 179.34) (   1.17,-176.97)  421.25                80
 07/14/2023   14:19:01   (  -0.34, 177.80) (  -0.32, 177.57)   25.78                80
 07/16/2023   02:41:36   (   0.37, 176.24) (  -0.59, 172.09)  473.77                80
 07/17/2023   02:20:36   (   0.35, 175.23) (   0.62, 176.49)  144.02                80
 07/18/2023   14:45:43   (  -0.39, 173.69) (   0.22, 171.03)  302.76                80
 07/19/2023   14:24:44   (  -0.36, 172.68) (  -0.99, 175.44)  314.76                80
 07/21/2023   02:49:59   (   0.39, 171.12) (   0.14, 169.95)  133.39                80
 07/22/2023   02:29:00   (   0.37, 170.11) (   1.35, 174.35)  484.43                80
 07/23/2023   14:51:26   (  -0.40, 168.57) (  -0.46, 168.90)   37.79                80
 07/25/2023   03:16:41   (   0.42, 167.01) (  -0.38, 163.41)  410.81                80