Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 6 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/10/2012   10:29:11   (  -0.12,-135.18) (   0.20,-136.73)  175.26                80
 06/11/2012   10:13:04   (  -0.11,-135.16) (  -0.77,-132.18)  339.14                80
 06/12/2012   22:32:20   (   0.13,-135.12) (  -0.38,-137.49)  269.48                80
 06/13/2012   22:16:13   (   0.12,-135.10) (   0.59,-132.95)  244.77                80
 06/15/2012   10:35:19   (  -0.15,-135.05) (   0.56,-138.22)  360.59                80
 06/16/2012   10:19:14   (  -0.14,-135.02) (  -0.47,-133.68)  153.01                80
 06/17/2012   22:38:28   (   0.17,-134.97) (  -0.74,-138.98)  457.38                80
 06/18/2012   22:22:23   (   0.16,-134.93) (   0.30,-134.45)   56.07                80
 06/21/2012   10:22:43   (  -0.17,-134.84) (  -0.11,-135.17)   37.34                80
 06/22/2012   10:06:36   (  -0.16,-134.80) (  -1.08,-130.63)  475.35                80
 06/23/2012   22:25:51   (   0.19,-134.74) (  -0.06,-135.94)  136.39                80