Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 1 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/29/2015   22:24:29   (   0.09,-134.92) (   0.51,-132.92)  227.19                80
 01/31/2015   10:46:14   (  -0.08,-134.98) (   0.65,-138.19)  365.43                80
 02/01/2015   10:24:47   (  -0.08,-135.02) (  -0.39,-133.65)  155.45                80
 02/02/2015   22:46:40   (   0.08,-135.06) (  -0.78,-138.96)  443.43                80
 02/03/2015   22:30:33   (   0.08,-135.10) (   0.20,-134.41)   77.62                80
 02/06/2015   10:30:51   (  -0.07,-135.19) (  -0.09,-135.15)    5.34                80
 02/08/2015   22:33:57   (   0.07,-135.26) (  -0.08,-135.91)   74.42                80
 02/09/2015   22:17:50   (   0.07,-135.29) (   0.97,-131.38)  445.82                80
 02/11/2015   10:39:33   (  -0.07,-135.34) (   0.23,-136.63)  147.94                80
 02/12/2015   10:18:07   (  -0.07,-135.36) (  -0.82,-132.11)  371.52                80