Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 11 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/20/2012   22:15:50   (  -0.01,-134.84) (   0.43,-132.93)  218.30                80
 11/22/2012   10:34:58   (  -0.02,-134.92) (   0.74,-138.20)  374.75                80
 11/23/2012   10:18:53   (  -0.00,-134.96) (  -0.28,-133.67)  146.56                80
 11/24/2012   22:38:10   (   0.03,-135.01) (  -0.88,-138.98)  452.73                80
 11/25/2012   22:22:05   (   0.01,-135.05) (   0.14,-134.45)   68.52                80
 11/28/2012   10:25:09   (  -0.02,-135.16) (  -0.03,-135.20)    4.65                80
 11/30/2012   22:25:40   (   0.03,-135.23) (  -0.14,-135.97)   84.50                80
 12/01/2012   22:09:34   (   0.01,-135.26) (   0.85,-131.43)  435.85                80
 12/03/2012   10:28:43   (  -0.04,-135.32) (   0.28,-136.71)  158.58                80