Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 1 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/11/2023   10:26:02   (  -0.00,-137.32) (  -0.48,-135.30)  229.83                80
 01/12/2023   22:47:59   (  -0.00,-137.31) (  -0.74,-140.60)  375.64                80
 01/13/2023   22:31:56   (  -0.00,-137.30) (   0.29,-136.08)  139.83                80
 01/15/2023   10:53:44   (   0.00,-137.28) (   0.92,-141.34)  462.54                80
 01/16/2023   10:32:21   (   0.00,-137.27) (  -0.12,-136.81)   52.28                80
 01/18/2023   22:35:33   (  -0.00,-137.22) (  -0.10,-137.58)   40.85                80
 01/19/2023   22:19:30   (  -0.01,-137.20) (   0.94,-133.05)  473.23                80
 01/21/2023   10:41:18   (   0.01,-137.16) (   0.27,-138.31)  131.17                80
 01/22/2023   10:19:54   (   0.01,-137.14) (  -0.71,-133.78)  382.45                80
 01/23/2023   22:41:51   (  -0.01,-137.10) (  -0.47,-139.08)  226.21                80
 01/24/2023   22:25:48   (  -0.01,-137.07) (   0.58,-134.56)  287.39                80