Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 3 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/17/2012   10:23:48   (   0.06,-135.26) (   0.07,-135.27)    1.38                80
 03/19/2012   22:26:59   (  -0.06,-135.24) (  -0.27,-136.04)   92.06                80
 03/20/2012   22:10:55   (  -0.06,-135.22) (   0.75,-131.51)  422.15                80
 03/22/2012   10:32:43   (   0.06,-135.16) (   0.41,-136.79)  185.52                80
 03/23/2012   10:11:19   (   0.06,-135.14) (  -0.61,-132.26)  328.21                80
 03/24/2012   22:33:14   (  -0.06,-135.13) (  -0.62,-137.56)  277.88                80
 03/25/2012   22:17:09   (  -0.06,-135.10) (   0.40,-133.03)  235.57                80
 03/27/2012   10:36:18   (   0.06,-135.03) (   0.77,-138.31)  373.13                80
 03/28/2012   10:20:12   (   0.06,-135.00) (  -0.19,-133.77)  139.76                80
 03/29/2012   22:39:29   (  -0.06,-134.97) (  -0.98,-139.08)  468.01                80