Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 3 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/12/2015   22:33:40   (   0.01,-135.22) (  -0.16,-135.97)   86.52                80
 03/13/2015   22:17:35   (   0.02,-135.19) (   0.86,-131.44)  427.37                80
 03/15/2015   10:39:21   (  -0.01,-135.17) (   0.31,-136.72)  175.68                80
 03/16/2015   10:17:54   (  -0.01,-135.14) (  -0.66,-132.17)  337.40                80
 03/17/2015   22:39:49   (   0.00,-135.07) (  -0.55,-137.47)  274.33                80
 03/18/2015   22:23:43   (   0.01,-135.04) (   0.48,-132.94)  238.84                80
 03/20/2015   10:45:29   (  -0.00,-135.01) (   0.68,-138.22)  364.54                80
 03/21/2015   10:24:03   (  -0.01,-134.98) (  -0.29,-133.68)  147.93                80
 03/22/2015   22:45:57   (   0.01,-134.89) (  -0.91,-138.98)  465.30                80
 03/23/2015   22:29:52   (   0.01,-134.86) (   0.13,-134.45)   47.37                80