Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 3 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/13/2012   22:39:30   (  -0.05,-135.33) (  -0.91,-139.06)  425.22                80
 03/14/2012   22:23:26   (  -0.06,-135.31) (   0.11,-134.53)   89.07                80
 03/17/2012   10:26:29   (   0.06,-135.25) (   0.04,-135.28)    3.61                80
 03/19/2012   22:27:00   (  -0.06,-135.21) (  -0.25,-136.05)   95.41                80
 03/20/2012   22:10:56   (  -0.06,-135.19) (   0.77,-131.52)  418.53                80
 03/22/2012   10:30:04   (   0.06,-135.15) (   0.40,-136.80)  187.57                80
 03/23/2012   10:13:59   (   0.06,-135.12) (  -0.56,-132.26)  326.04                80
 03/24/2012   22:33:15   (  -0.06,-135.09) (  -0.61,-137.57)  282.05                80
 03/25/2012   22:17:10   (  -0.06,-135.06) (   0.41,-133.04)  231.19                80