Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 1 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)
 01/20/2013   10:31:18   (  -0.09,-134.85) (   0.29,-136.64)  203.41                80
 01/21/2013   10:09:54   (  -0.09,-134.81) (  -0.69,-132.10)  308.03                80
 01/22/2013   22:31:53   (   0.09,-134.72) (  -0.49,-137.42)  307.53                80
 01/23/2013   22:15:50   (   0.08,-134.68) (   0.47,-132.89)  203.77                80
 01/25/2013   10:37:40   (  -0.08,-134.64) (   0.73,-138.16)  401.76                80
 01/26/2013   10:16:18   (  -0.08,-134.59) (  -0.28,-133.64)  108.74                80
 01/28/2013   22:22:15   (   0.08,-134.44) (   0.05,-134.42)    3.49                80
 01/31/2013   10:25:24   (  -0.08,-134.35) (   0.09,-135.19)   95.10                80
 02/01/2013   10:04:02   (  -0.08,-134.29) (  -0.89,-130.66)  414.21                80