Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 4 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/15/2012   22:20:34   (  -0.06,-134.60) (  -0.07,-134.52)    9.21                80
 04/18/2012   10:23:37   (   0.06,-134.63) (   0.18,-135.27)   71.76                80
 04/19/2012   10:07:31   (   0.06,-134.67) (  -0.82,-130.73)  448.86                80
 04/20/2012   22:26:48   (  -0.05,-134.79) (  -0.31,-136.05)  143.05                80
 04/21/2012   22:10:42   (  -0.05,-134.82) (   0.70,-131.51)  377.31                80
 04/23/2012   10:29:48   (   0.04,-134.81) (   0.51,-136.78)  225.05                80
 04/24/2012   10:13:44   (   0.04,-134.84) (  -0.56,-132.25)  294.82                80
 04/25/2012   22:32:59   (  -0.03,-134.94) (  -0.61,-137.56)  298.60                80
 04/26/2012   22:16:54   (  -0.04,-134.96) (   0.40,-133.03)  221.07                80
 04/28/2012   10:36:00   (   0.02,-134.94) (   0.78,-138.29)  382.01                80