Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 12 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/11/2014   22:42:03   (   0.07,-135.38) (  -0.44,-137.58)  251.59                80
 12/12/2014   22:25:58   (   0.06,-135.39) (   0.60,-133.05)  266.34                80
 12/14/2014   10:45:04   (  -0.08,-135.44) (   0.57,-138.33)  329.36                80
 12/15/2014   10:28:59   (  -0.07,-135.45) (  -0.46,-133.80)  188.04                80
 12/16/2014   22:48:13   (   0.08,-135.41) (  -0.72,-139.11)  420.55                80
 12/17/2014   22:32:07   (   0.07,-135.42) (   0.25,-134.57)   96.64                80
 12/19/2014   10:51:13   (  -0.09,-135.46) (   0.91,-139.84)  499.74                80
 12/20/2014   10:35:07   (  -0.08,-135.46) (  -0.13,-135.32)   16.91                80
 12/22/2014   22:35:35   (   0.08,-135.40) (  -0.07,-136.08)   77.63                80
 12/23/2014   22:19:29   (   0.07,-135.39) (   0.92,-131.54)  438.32                80