Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 9 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/23/2013   10:21:42   (   0.34,-135.48) (  -0.04,-133.69)  203.35                80
 09/24/2013   22:41:00   (  -0.31,-135.41) (  -1.13,-139.00)  409.67                80
 09/25/2013   22:24:57   (  -0.32,-135.40) (  -0.10,-134.48)  105.78                80
 09/27/2013   10:44:06   (   0.29,-135.44) (   1.24,-139.75)  491.08                80
 09/28/2013   10:28:02   (   0.31,-135.42) (   0.27,-135.21)   23.80                80
 09/30/2013   22:28:35   (  -0.29,-135.32) (  -0.46,-135.98)   75.96                80
 10/01/2013   22:12:32   (  -0.30,-135.31) (   0.57,-131.46)  438.89                80
 10/03/2013   10:31:41   (   0.27,-135.34) (   0.57,-136.73)  158.80                80
 10/04/2013   10:15:37   (   0.29,-135.31) (  -0.41,-132.19)  355.42                80
 10/05/2013   22:34:55   (  -0.26,-135.21) (  -0.75,-137.50)  260.75                80
 10/06/2013   22:18:51   (  -0.27,-135.19) (   0.23,-132.97)  253.21                80