Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 11 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/22/2013   22:35:20   (   0.01,-135.41) (  -0.48,-137.45)  233.33                80
 11/23/2013   22:19:17   (  -0.01,-135.42) (   0.55,-132.93)  283.85                80
 11/25/2013   10:38:29   (  -0.02,-135.49) (   0.61,-138.21)  310.12                80
 11/26/2013   10:22:26   (  -0.01,-135.50) (  -0.43,-133.69)  206.91                80
 11/27/2013   22:41:44   (   0.04,-135.45) (  -0.79,-138.99)  404.56                80
 11/28/2013   22:25:42   (   0.02,-135.45) (   0.25,-134.47)  111.99                80
 11/30/2013   10:44:53   (  -0.05,-135.50) (   0.88,-139.75)  483.33                80
 12/01/2013   10:28:50   (  -0.03,-135.50) (  -0.11,-135.22)   32.86                80
 12/03/2013   22:29:25   (   0.04,-135.42) (  -0.09,-135.99)   64.17                80
 12/04/2013   22:13:21   (   0.02,-135.41) (   0.91,-131.45)  451.13                80