Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 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)
 12/17/2013   10:26:38   (  -0.08,-135.20) (  -0.05,-135.25)    6.03                80
 12/19/2013   22:29:53   (   0.09,-135.10) (  -0.15,-136.02)  105.18                80
 12/20/2013   22:13:50   (   0.08,-135.08) (   0.91,-131.50)  408.27                80
 12/22/2013   10:33:01   (  -0.10,-135.06) (   0.26,-136.77)  194.13                80
 12/23/2013   10:16:57   (  -0.09,-135.03) (  -0.74,-132.24)  319.14                80
 12/24/2013   22:36:14   (   0.11,-134.95) (  -0.50,-137.53)  294.61                80
 12/25/2013   22:20:11   (   0.10,-134.92) (   0.50,-133.00)  218.16                80
 12/27/2013   10:39:21   (  -0.11,-134.89) (   0.65,-138.28)  385.54                80
 12/28/2013   10:23:18   (  -0.10,-134.86) (  -0.36,-133.74)  126.85                80
 12/29/2013   22:42:36   (   0.11,-134.76) (  -0.82,-139.05)  487.96                80