Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 12 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/16/2012   22:25:41   (   0.07,-135.45) (  -0.07,-135.97)   59.57                80
 12/17/2012   22:09:36   (   0.06,-135.46) (   0.97,-131.44)  458.23                80
 12/19/2012   10:28:43   (  -0.08,-135.48) (   0.22,-136.70)  140.59                80
 12/20/2012   10:12:39   (  -0.07,-135.48) (  -0.82,-132.18)  376.72                80
 12/21/2012   22:31:54   (   0.09,-135.48) (  -0.38,-137.47)  228.24                80
 12/22/2012   22:15:50   (   0.08,-135.48) (   0.66,-132.95)  289.13                80
 12/24/2012   10:34:57   (  -0.09,-135.49) (   0.51,-138.22)  309.72                80
 12/25/2012   10:18:52   (  -0.08,-135.49) (  -0.49,-133.68)  206.93                80
 12/26/2012   22:38:07   (   0.09,-135.47) (  -0.71,-138.97)  399.73                80
 12/27/2012   22:22:01   (   0.08,-135.47) (   0.29,-134.44)  116.88                80
 12/29/2012   10:41:09   (  -0.09,-135.48) (   0.87,-139.71)  482.31                80