Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2026 4 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2026   09:35:19   (  -0.53,  63.23) (  -1.40,  59.24)  453.37                80
 04/21/2026   09:19:15   (  -0.58,  63.23) (  -0.47,  63.79)   63.38                80
 04/23/2026   21:19:45   (   0.54,  63.31) (   0.59,  63.03)   31.09                80
 04/24/2026   21:03:42   (   0.59,  63.31) (  -0.34,  67.58)  485.49                80
 04/26/2026   09:23:05   (  -0.49,  63.25) (  -0.70,  62.23)  115.73                80
 04/27/2026   09:07:02   (  -0.54,  63.26) (   0.23,  66.78)  401.22                80
 04/28/2026   21:26:14   (   0.43,  63.32) (   0.87,  61.49)  209.60                80
 04/29/2026   21:10:11   (   0.48,  63.33) (  -0.12,  66.02)  306.90                80
 05/01/2026   09:29:34   (  -0.36,  63.28) (  -0.97,  60.69)  295.59                80
 05/02/2026   09:13:31   (  -0.42,  63.29) (   0.03,  65.22)  220.94                80