Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 2 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/17/2012   22:08:13   (  -0.02,-135.31) (   0.86,-131.45)  440.40                80
 02/19/2012   10:32:41   (   0.02,-135.34) (   0.31,-136.73)  158.19                80
 02/20/2012   10:11:17   (   0.02,-135.35) (  -0.70,-132.20)  360.02                80
 02/21/2012   22:35:53   (  -0.02,-135.39) (  -0.49,-137.51)  241.15                80
 02/22/2012   22:14:29   (  -0.02,-135.41) (   0.53,-132.98)  276.96                80
 02/24/2012   10:38:57   (   0.02,-135.43) (   0.63,-138.26)  322.01                80
 02/25/2012   10:17:33   (   0.02,-135.44) (  -0.39,-133.73)  195.85                80
 02/26/2012   22:42:08   (  -0.02,-135.47) (  -0.84,-139.03)  406.05                80
 02/27/2012   22:20:43   (  -0.02,-135.48) (   0.19,-134.50)  111.46                80
 02/29/2012   10:45:12   (   0.02,-135.49) (   0.96,-139.78)  488.65                80
 03/01/2012   10:23:46   (   0.03,-135.50) (  -0.01,-135.24)   28.46                80