Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 2 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/05/2018   22:36:27   (   0.03,-135.27) (  -0.49,-137.48)  251.91                80
 02/06/2018   22:15:02   (   0.03,-135.30) (   0.58,-132.96)  267.19                80
 02/08/2018   10:39:28   (  -0.02,-135.35) (   0.62,-138.22)  327.18                80
 02/09/2018   10:18:03   (  -0.02,-135.36) (  -0.39,-133.68)  191.55                80
 02/10/2018   22:42:38   (  -0.00,-135.37) (  -0.79,-138.98)  411.64                80
 02/11/2018   22:21:13   (  -0.01,-135.38) (   0.22,-134.45)  106.83                80
 02/13/2018   10:45:39   (   0.01,-135.42) (   0.98,-139.71)  488.63                80
 02/14/2018   10:24:14   (   0.01,-135.44) (  -0.03,-135.17)   29.34                80
 02/16/2018   22:30:03   (  -0.00,-135.44) (  -0.13,-135.94)   57.85                80
 02/17/2018   22:11:18   (  -0.00,-135.44) (   0.88,-131.41)  459.73                80
 02/19/2018   10:33:05   (   0.00,-135.48) (   0.25,-136.68)  136.91                80