Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 8 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/14/2015   22:28:00   (   0.28,-134.83) (   0.34,-134.52)   34.97                80
 08/17/2015   10:28:21   (  -0.29,-134.72) (  -0.17,-135.25)   60.49                80
 08/18/2015   10:12:15   (  -0.28,-134.69) (  -1.20,-130.72)  453.03                80
 08/19/2015   22:31:30   (   0.29,-134.68) (   0.00,-136.02)  152.89                80
 08/20/2015   22:15:24   (   0.29,-134.65) (   1.03,-131.49)  360.17                80
 08/22/2015   10:34:29   (  -0.30,-134.56) (   0.22,-136.75)  250.36                80
 08/23/2015   10:18:24   (  -0.30,-134.52) (  -0.81,-132.22)  262.22                80
 08/24/2015   22:37:38   (   0.31,-134.49) (  -0.38,-137.52)  345.02                80
 08/25/2015   22:21:33   (   0.31,-134.45) (   0.65,-132.99)  167.03                80
 08/27/2015   10:40:39   (  -0.32,-134.35) (   0.53,-138.25)  444.91                80
 08/28/2015   10:24:33   (  -0.32,-134.30) (  -0.44,-133.71)   66.80                80