Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2013 2 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/21/2013   10:31:57   (  -0.03,-135.26) (   0.30,-136.76)  170.04                80
 02/22/2013   10:10:33   (  -0.03,-135.28) (  -0.72,-132.23)  348.19                80
 02/23/2013   22:35:10   (   0.02,-135.26) (  -0.51,-137.53)  259.35                80
 02/24/2013   22:13:47   (   0.02,-135.28) (   0.51,-133.00)  258.61                80
 02/26/2013   10:38:17   (  -0.02,-135.35) (   0.61,-138.29)  333.80                80
 02/27/2013   10:16:54   (  -0.02,-135.37) (  -0.41,-133.76)  183.72                80
 02/28/2013   22:41:31   (   0.02,-135.33) (  -0.81,-139.06)  425.11                80
 03/01/2013   22:20:08   (   0.02,-135.34) (   0.21,-134.54)   91.87                80
 03/04/2013   10:23:13   (  -0.02,-135.41) (  -0.06,-135.28)   14.46                80