Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 10 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)
 10/06/2016   10:24:59   (   0.25,-135.23) (   0.25,-135.12)   11.64                80
 10/08/2016   22:28:12   (  -0.24,-135.13) (  -0.42,-135.91)   88.97                80
 10/09/2016   22:12:08   (  -0.25,-135.10) (   0.59,-131.38)  424.02                80
 10/11/2016   10:31:16   (   0.22,-135.08) (   0.58,-136.66)  180.24                80
 10/12/2016   10:15:12   (   0.23,-135.04) (  -0.43,-132.13)  332.08                80
 10/13/2016   22:34:29   (  -0.20,-134.95) (  -0.74,-137.44)  283.24                80
 10/14/2016   22:18:23   (  -0.22,-134.91) (   0.21,-132.90)  229.12                80
 10/16/2016   10:37:32   (   0.19,-134.89) (   0.95,-138.18)  375.57                80
 10/17/2016   10:21:27   (   0.20,-134.84) (  -0.06,-133.65)  136.03                80