Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2011 11 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/15/2011   08:49:32   (   0.05,-112.30) (  -0.16,-111.39)  104.62                80
 11/16/2011   21:12:31   (  -0.03,-113.76) (  -0.63,-116.35)  296.05                80
 11/17/2011   20:50:03   (  -0.04,-114.55) (   0.64,-111.59)  337.54                80
 11/19/2011   09:12:49   (   0.02,-115.53) (   0.26,-116.48)  109.16                80
 11/21/2011   21:10:35   (  -0.02,-117.76) (   0.24,-116.67)  125.13                80
 11/23/2011   09:33:18   (   0.00,-118.75) (   0.65,-121.55)  319.87                80
 11/24/2011   09:10:46   (   0.03,-119.53) (  -0.59,-116.77)  314.06                80
 11/25/2011   21:33:38   (  -0.01,-120.96) (  -0.18,-121.71)   85.17                80