Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 5 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)
 05/15/2012   10:19:47   (   0.00,-135.41) (  -0.39,-133.77)  188.23                80
 05/16/2012   22:39:02   (   0.02,-135.43) (  -0.79,-139.07)  414.43                80
 05/17/2012   22:22:57   (   0.01,-135.44) (   0.23,-134.54)  103.45                80
 05/19/2012   10:42:03   (  -0.04,-135.45) (   0.93,-139.81)  496.33                80
 05/20/2012   10:25:58   (  -0.03,-135.46) (  -0.09,-135.28)   21.06                80
 05/22/2012   22:26:27   (   0.04,-135.46) (  -0.06,-136.05)   66.13                80
 05/23/2012   22:10:21   (   0.03,-135.46) (   0.90,-131.50)  450.88                80
 05/25/2012   10:29:27   (  -0.05,-135.46) (   0.25,-136.77)  150.19                80
 05/26/2012   10:13:22   (  -0.04,-135.45) (  -0.77,-132.24)  366.35                80
 05/27/2012   22:32:37   (   0.06,-135.44) (  -0.39,-137.55)  239.18                80