Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 1 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/28/2013   22:19:28   (   0.08,-134.38) (   0.06,-134.39)    2.49                80
 01/31/2013   10:25:14   (  -0.08,-134.28) (   0.12,-135.14)   98.35                80
 02/01/2013   10:03:51   (  -0.08,-134.22) (  -0.88,-130.61)  411.01                80
 02/02/2013   22:25:49   (   0.08,-134.09) (  -0.32,-135.92)  208.30                80
 02/03/2013   22:09:46   (   0.07,-134.02) (   0.69,-131.39)  300.95                80
 02/05/2013   10:31:34   (  -0.07,-133.96) (   0.55,-136.65)  306.80                80
 02/06/2013   10:10:10   (  -0.07,-133.89) (  -0.46,-132.12)  201.63                80
 02/07/2013   22:32:08   (   0.06,-133.74) (  -0.79,-137.42)  419.59                80
 02/08/2013   22:16:04   (   0.06,-133.67) (   0.22,-132.89)   89.01                80