Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 2 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/11/2018   22:21:13   (   0.01,-135.37) (   0.22,-134.45)  105.49                80
 02/13/2018   10:45:39   (  -0.00,-135.40) (   0.98,-139.71)  491.14                80
 02/14/2018   10:24:14   (  -0.00,-135.41) (  -0.03,-135.17)   26.62                80
 02/16/2018   22:30:04   (   0.00,-135.42) (  -0.14,-135.94)   60.36                80
 02/17/2018   22:08:38   (   0.00,-135.42) (   0.87,-131.40)  456.87                80
 02/19/2018   10:33:05   (  -0.00,-135.44) (   0.26,-136.68)  141.20                80
 02/20/2018   10:11:40   (  -0.01,-135.44) (  -0.75,-132.15)  375.60                80
 02/21/2018   22:36:15   (   0.00,-135.42) (  -0.42,-137.45)  230.04                80
 02/22/2018   22:14:50   (   0.00,-135.42) (   0.59,-132.91)  286.30                80
 02/24/2018   10:39:16   (   0.00,-135.42) (   0.60,-138.17)  313.25                80
 02/25/2018   10:17:51   (   0.00,-135.41) (  -0.41,-133.64)  202.56                80