Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2011 12 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/28/2011   10:24:22   (  -0.04,-134.78) (   0.06,-135.20)   48.42                80
 12/29/2011   10:08:15   (  -0.03,-134.79) (  -0.95,-130.67)  469.55                80
 12/30/2011   22:27:29   (   0.04,-134.77) (  -0.26,-135.96)  137.04                80
 12/31/2011   22:11:23   (   0.04,-134.77) (   0.81,-131.44)  380.57                80
 01/02/2012   10:30:27   (  -0.04,-134.81) (   0.38,-136.70)  214.62                80
 01/03/2012   10:14:21   (  -0.04,-134.82) (  -0.64,-132.16)  302.81                80
 01/04/2012   22:36:14   (   0.04,-134.79) (  -0.56,-137.46)  304.31                80
 01/05/2012   22:14:48   (   0.03,-134.78) (   0.46,-132.92)  212.49                80
 01/07/2012   10:36:32   (  -0.03,-134.81) (   0.71,-138.18)  384.33                80
 01/08/2012   10:20:26   (  -0.03,-134.80) (  -0.31,-133.65)  132.29                80