Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 10 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)
 10/10/2013   22:41:12   (  -0.22,-135.02) (  -1.14,-138.99)  453.45                80
 10/11/2013   22:25:09   (  -0.23,-135.00) (  -0.10,-134.47)   60.80                80
 10/14/2013   10:25:32   (   0.22,-134.99) (   0.29,-135.20)   24.73                80
 10/15/2013   10:09:29   (   0.23,-134.96) (  -0.76,-130.67)  489.21                80
 10/16/2013   22:28:46   (  -0.20,-134.86) (  -0.44,-135.97)  126.54                80
 10/17/2013   22:12:42   (  -0.21,-134.83) (   0.55,-131.44)  387.36                80
 10/19/2013   10:31:50   (   0.18,-134.84) (   0.63,-136.70)  212.31                80
 10/20/2013   10:15:46   (   0.20,-134.81) (  -0.36,-132.16)  301.04                80
 10/21/2013   22:35:04   (  -0.16,-134.70) (  -0.76,-137.48)  316.20                80
 10/22/2013   22:18:59   (  -0.18,-134.67) (   0.23,-132.94)  197.01                80
 10/24/2013   10:38:08   (   0.15,-134.67) (   0.95,-138.21)  403.32                80