Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 1 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2016   22:29:43   (   0.08,-134.57) (  -0.27,-135.99)  162.91                80
 01/11/2016   22:13:39   (   0.08,-134.61) (   0.81,-131.47)  358.60                80
 01/13/2016   10:32:45   (  -0.09,-134.73) (   0.39,-136.74)  229.26                80
 01/14/2016   10:16:39   (  -0.08,-134.77) (  -0.63,-132.21)  291.82                80
 01/15/2016   22:35:55   (   0.09,-134.78) (  -0.53,-137.51)  312.07                80
 01/16/2016   22:19:49   (   0.08,-134.81) (   0.48,-132.98)  208.70                80
 01/18/2016   10:38:57   (  -0.09,-134.92) (   0.65,-138.26)  379.99                80
 01/19/2016   10:22:51   (  -0.08,-134.96) (  -0.37,-133.73)  140.39                80
 01/20/2016   22:42:05   (   0.08,-134.95) (  -0.85,-139.02)  464.56                80
 01/21/2016   22:26:00   (   0.08,-134.98) (   0.17,-134.49)   55.55                80