Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 1 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/30/2016   10:13:46   (  -0.08,-135.24) (  -0.76,-132.21)  346.03                80
 01/31/2016   22:35:40   (   0.08,-135.22) (  -0.46,-137.50)  260.04                80
 02/01/2016   22:19:34   (   0.07,-135.24) (   0.57,-132.97)  258.41                80
 02/03/2016   10:41:21   (  -0.07,-135.30) (   0.59,-138.24)  334.71                80
 02/04/2016   10:19:55   (  -0.07,-135.31) (  -0.43,-133.71)  183.21                80
 02/05/2016   22:41:50   (   0.06,-135.28) (  -0.78,-139.00)  424.30                80
 02/06/2016   22:25:44   (   0.06,-135.29) (   0.24,-134.47)   93.20                80
 02/09/2016   10:26:04   (  -0.06,-135.34) (  -0.06,-135.20)   16.28                80
 02/11/2016   22:31:54   (   0.05,-135.30) (  -0.07,-135.97)   76.09                80
 02/12/2016   22:10:27   (   0.05,-135.30) (   0.90,-131.43)  440.53                80