Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 1 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/20/2014   22:30:33   (   0.12,-135.18) (  -0.07,-136.04)   98.15                80
 01/21/2014   22:14:29   (   0.12,-135.20) (   0.95,-131.51)  421.11                80
 01/23/2014   10:36:18   (  -0.12,-135.23) (   0.20,-136.78)  175.90                80
 01/24/2014   10:14:54   (  -0.12,-135.25) (  -0.77,-132.24)  342.74                80
 01/25/2014   22:36:52   (   0.12,-135.28) (  -0.40,-137.54)  258.43                80
 01/26/2014   22:20:49   (   0.11,-135.29) (   0.63,-133.02)  259.81                80
 01/28/2014   10:42:37   (  -0.11,-135.31) (   0.57,-138.27)  338.38                80
 01/29/2014   10:21:14   (  -0.11,-135.32) (  -0.46,-133.75)  179.27                80
 01/30/2014   22:43:12   (   0.11,-135.33) (  -0.70,-139.05)  423.41                80
 01/31/2014   22:27:07   (   0.11,-135.34) (   0.28,-134.51)   94.19                80