Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 6 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/01/2012   22:38:47   (   0.09,-135.35) (  -0.71,-139.04)  419.84                80
 06/02/2012   22:22:41   (   0.08,-135.33) (   0.26,-134.50)   95.15                80
 06/05/2012   10:23:01   (  -0.09,-135.27) (  -0.08,-135.22)    5.51                80
 06/07/2012   22:26:11   (   0.11,-135.22) (  -0.05,-136.00)   88.51                80
 06/08/2012   22:10:04   (   0.09,-135.20) (   0.93,-131.46)  426.06                80
 06/10/2012   10:29:10   (  -0.12,-135.15) (   0.22,-136.73)  179.31                80
 06/11/2012   10:13:04   (  -0.11,-135.13) (  -0.75,-132.18)  334.94                80
 06/12/2012   22:32:19   (   0.13,-135.09) (  -0.39,-137.49)  273.49                80
 06/13/2012   22:16:13   (   0.12,-135.06) (   0.59,-132.95)  240.57                80
 06/15/2012   10:35:19   (  -0.15,-135.01) (   0.56,-138.22)  365.53                80