Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 1 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/12/2023   22:47:59   (  -0.00,-137.31) (  -0.76,-140.60)  375.64                80
 01/13/2023   22:31:55   (  -0.00,-137.30) (   0.27,-136.07)  139.81                80
 01/15/2023   10:53:44   (   0.00,-137.28) (   0.94,-141.33)  462.54                80
 01/16/2023   10:32:20   (   0.00,-137.27) (  -0.09,-136.81)   52.27                80
 01/18/2023   22:35:34   (  -0.00,-137.22) (  -0.07,-137.58)   40.79                80
 01/19/2023   22:19:30   (  -0.01,-137.20) (   0.91,-133.05)  473.26                80
 01/21/2023   10:41:18   (   0.01,-137.16) (   0.29,-138.31)  131.16                80
 01/22/2023   10:19:54   (   0.01,-137.14) (  -0.75,-133.79)  382.48                80
 01/23/2023   22:41:52   (  -0.01,-137.10) (  -0.43,-139.09)  226.19                80
 01/24/2023   22:25:47   (  -0.01,-137.07) (   0.56,-134.55)  287.42                80