Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 1 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)
 01/17/2013   22:25:27   (   0.10,-134.91) (  -0.11,-135.87)  109.89                80
 01/18/2013   22:09:22   (   0.09,-134.87) (   0.87,-131.33)  403.14                80
 01/20/2013   10:31:09   (  -0.09,-134.85) (   0.31,-136.60)  199.75                80
 01/21/2013   10:09:45   (  -0.09,-134.81) (  -0.72,-132.07)  312.51                80
 01/22/2013   22:31:41   (   0.09,-134.71) (  -0.48,-137.37)  302.52                80
 01/23/2013   22:15:36   (   0.08,-134.67) (   0.48,-132.83)  209.64                80
 01/25/2013   10:37:24   (  -0.08,-134.64) (   0.66,-138.10)  393.86                80
 01/26/2013   10:15:58   (  -0.08,-134.59) (  -0.29,-133.56)  117.55                80
 01/27/2013   22:37:56   (   0.08,-134.48) (  -0.88,-138.86)  499.30                80
 01/28/2013   22:21:51   (   0.08,-134.43) (   0.13,-134.33)   12.40                80