Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 10 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/12/2016   10:15:12   (   0.23,-135.05) (  -0.43,-132.13)  332.84                80
 10/13/2016   22:34:29   (  -0.20,-134.96) (  -0.75,-137.44)  282.13                80
 10/14/2016   22:18:24   (  -0.21,-134.93) (   0.25,-132.91)  230.41                80
 10/16/2016   10:37:33   (   0.19,-134.90) (   0.91,-138.19)  374.01                80
 10/17/2016   10:21:28   (   0.20,-134.86) (  -0.08,-133.66)  137.72                80
 10/18/2016   22:40:46   (  -0.18,-134.76) (  -1.10,-138.97)  479.45                80
 10/19/2016   22:24:41   (  -0.19,-134.72) (  -0.11,-134.44)   32.20                80
 10/22/2016   10:25:05   (   0.18,-134.64) (   0.28,-135.19)   62.09                80
 10/23/2016   10:09:00   (   0.19,-134.59) (  -0.71,-130.65)  448.75                80
 10/24/2016   22:28:18   (  -0.16,-134.47) (  -0.48,-135.97)  169.86                80