Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 1 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/04/2013   10:31:18   (  -0.10,-135.32) (   0.22,-136.67)  153.43                80
 01/05/2013   10:09:53   (  -0.09,-135.30) (  -0.83,-132.14)  360.79                80
 01/06/2013   22:31:49   (   0.10,-135.24) (  -0.39,-137.43)  250.37                80
 01/07/2013   22:15:43   (   0.09,-135.21) (   0.59,-132.89)  263.66                80
 01/09/2013   10:37:30   (  -0.10,-135.19) (   0.58,-138.16)  338.43                80
 01/10/2013   10:16:05   (  -0.09,-135.16) (  -0.41,-133.62)  174.77                80
 01/11/2013   22:38:01   (   0.09,-135.08) (  -0.76,-138.92)  438.49                80
 01/12/2013   22:21:56   (   0.09,-135.04) (   0.22,-134.38)   74.84                80
 01/15/2013   10:24:59   (  -0.09,-134.99) (  -0.09,-135.12)   14.54                80
 01/16/2013   10:03:33   (  -0.09,-134.96) (  -1.06,-130.58)  498.33                80
 01/17/2013   22:25:29   (   0.09,-134.87) (  -0.11,-135.89)  115.82                80