Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 10 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/18/2012   22:31:40   (  -0.17,-135.33) (  -0.64,-137.40)  236.54                80
 10/19/2012   22:15:36   (  -0.18,-135.31) (   0.34,-132.87)  278.46                80
 10/21/2012   10:34:45   (   0.15,-135.33) (   0.80,-138.15)  321.36                80
 10/22/2012   10:18:42   (   0.16,-135.32) (  -0.24,-133.62)  193.28                80
 10/23/2012   22:37:59   (  -0.12,-135.25) (  -0.95,-138.93)  419.95                80
 10/24/2012   22:21:55   (  -0.14,-135.23) (   0.04,-134.40)   94.79                80
 10/27/2012   10:23:17   (   0.13,-135.23) (   0.12,-135.15)    9.63                22
 10/29/2012   22:25:32   (  -0.11,-135.13) (  -0.30,-135.92)   90.34                80
 10/30/2012   22:09:28   (  -0.13,-135.11) (   0.69,-131.39)  423.72                80