Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 9 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/30/2013   22:28:36   (  -0.29,-135.32) (  -0.42,-135.99)   76.28                80
 10/01/2013   22:12:31   (  -0.30,-135.30) (   0.56,-131.45)  438.53                80
 10/03/2013   10:31:41   (   0.27,-135.33) (   0.58,-136.73)  159.67                80
 10/04/2013   10:15:36   (   0.29,-135.30) (  -0.40,-132.19)  354.50                80
 10/05/2013   22:34:55   (  -0.26,-135.20) (  -0.76,-137.50)  261.27                80
 10/06/2013   22:18:50   (  -0.27,-135.18) (   0.21,-132.96)  252.66                80
 10/08/2013   10:37:59   (   0.24,-135.19) (   0.92,-138.24)  346.61                80
 10/09/2013   10:21:55   (   0.26,-135.16) (  -0.06,-133.70)  166.45                80
 10/10/2013   22:41:13   (  -0.22,-135.04) (  -1.10,-139.01)  451.61                80
 10/11/2013   22:25:09   (  -0.24,-135.01) (  -0.12,-134.47)   61.24                80