Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 8 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/20/2012   22:38:08   (  -0.43,-134.61) (  -1.36,-138.87)  485.07                80
 08/21/2012   22:22:02   (  -0.43,-134.57) (  -0.39,-134.33)   26.96                80
 08/24/2012   10:25:05   (   0.42,-134.46) (   0.56,-135.07)   69.88                80
 08/25/2012   10:03:41   (   0.42,-134.40) (  -0.46,-130.54)  440.73                80
 08/26/2012   22:25:37   (  -0.41,-134.32) (  -0.72,-135.85)  173.23                80
 08/27/2012   22:09:31   (  -0.41,-134.27) (   0.24,-131.31)  337.77                80
 08/29/2012   10:31:20   (   0.40,-134.20) (   0.90,-136.58)  270.63                80
 08/30/2012   10:09:54   (   0.40,-134.15) (  -0.06,-132.04)  239.78                80
 08/31/2012   22:31:50   (  -0.39,-134.05) (  -1.14,-137.35)  375.73                80
 09/01/2012   22:15:46   (  -0.40,-134.00) (  -0.12,-132.82)  135.12                80