Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/23/2012   22:25:51   (   0.18,-135.04) (   0.00,-135.94)  102.23                80
 06/24/2012   22:09:44   (   0.17,-135.07) (   0.98,-131.40)  418.09                80
 06/26/2012   10:28:51   (  -0.19,-135.11) (   0.17,-136.67)  178.19                80
 06/27/2012   10:12:45   (  -0.18,-135.13) (  -0.87,-132.14)  341.54                80
 06/28/2012   22:32:00   (   0.21,-135.17) (  -0.32,-137.44)  259.13                80
 06/29/2012   22:15:54   (   0.20,-135.19) (   0.72,-132.91)  260.09                80
 07/01/2012   10:35:00   (  -0.23,-135.21) (   0.44,-138.17)  337.77                80
 07/02/2012   10:18:55   (  -0.22,-135.23) (  -0.59,-133.64)  180.92                80
 07/03/2012   22:38:09   (   0.25,-135.25) (  -0.59,-138.94)  421.08                80
 07/04/2012   22:22:04   (   0.24,-135.26) (   0.45,-134.41)   97.58                80