Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 1 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/05/2016   22:23:32   (   0.08,-134.30) (   0.07,-134.49)   20.52                80
 01/06/2016   22:07:26   (   0.07,-134.25) (   1.02,-129.94)  490.57                80
 01/08/2016   10:26:33   (  -0.08,-134.19) (   0.12,-135.22)  116.17                80
 01/09/2016   10:10:27   (  -0.07,-134.13) (  -0.83,-130.67)  393.94                80
 01/10/2016   22:29:41   (   0.08,-134.00) (  -0.39,-135.97)  224.70                80
 01/11/2016   22:13:36   (   0.08,-133.94) (   0.63,-131.43)  285.28                80
 01/13/2016   10:32:42   (  -0.08,-133.88) (   0.57,-136.70)  321.99                80
 01/14/2016   10:16:36   (  -0.08,-133.81) (  -0.44,-132.17)  187.32                80
 01/15/2016   22:35:51   (   0.09,-133.66) (  -0.77,-137.46)  432.99                80
 01/16/2016   22:19:45   (   0.08,-133.60) (   0.25,-132.93)   76.29                80