Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 2 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/11/2013   10:16:35   (  -0.06,-134.98) (  -0.36,-133.70)  145.79                80
 02/12/2013   22:41:14   (   0.05,-134.99) (  -0.84,-139.01)  457.66                80
 02/13/2013   22:19:50   (   0.05,-135.03) (   0.17,-134.48)   62.31                80
 02/16/2013   10:25:37   (  -0.05,-135.16) (  -0.04,-135.24)    8.50                80
 02/18/2013   22:28:52   (   0.04,-135.20) (  -0.17,-136.01)   93.86                80
 02/19/2013   22:07:29   (   0.04,-135.23) (   0.89,-131.50)  425.29                80
 02/21/2013   10:31:59   (  -0.03,-135.31) (   0.32,-136.77)  166.41                80
 02/22/2013   10:10:36   (  -0.03,-135.34) (  -0.74,-132.25)  352.32                80
 02/23/2013   22:35:15   (   0.02,-135.33) (  -0.47,-137.56)  253.45                80