Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2011 12 28.  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) (   0.08,-135.20)   48.87                80
 12/29/2011   10:08:16   (  -0.03,-134.79) (  -0.98,-130.68)  469.11                80
 12/30/2011   22:27:29   (   0.04,-134.76) (  -0.23,-135.97)  137.67                80
 12/31/2011   22:11:23   (   0.04,-134.77) (   0.77,-131.43)  379.82                80
 01/02/2012   10:30:28   (  -0.04,-134.81) (   0.38,-136.70)  215.37                80
 01/03/2012   10:14:22   (  -0.04,-134.81) (  -0.63,-132.16)  301.96                80
 01/04/2012   22:36:15   (   0.04,-134.78) (  -0.58,-137.45)  305.46                80
 01/05/2012   22:14:49   (   0.03,-134.78) (   0.43,-132.92)  211.24                80
 01/07/2012   10:36:34   (  -0.03,-134.80) (   0.71,-138.19)  385.65                80
 01/08/2012   10:20:27   (  -0.03,-134.80) (  -0.30,-133.65)  130.83                80
 01/09/2012   22:42:21   (   0.03,-134.76) (  -0.91,-138.94)  477.35                80
 01/10/2012   22:20:54   (   0.03,-134.75) (   0.10,-134.41)   38.47                80