Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 1 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/31/2015   10:46:14   (  -0.08,-134.98) (   0.63,-138.19)  365.72                80
 02/01/2015   10:24:47   (  -0.08,-135.02) (  -0.41,-133.66)  155.11                80
 02/02/2015   22:46:41   (   0.08,-135.06) (  -0.77,-138.96)  443.74                80
 02/03/2015   22:30:33   (   0.08,-135.10) (   0.21,-134.42)   77.20                80
 02/06/2015   10:30:51   (  -0.07,-135.19) (  -0.10,-135.15)    4.98                80
 02/08/2015   22:33:57   (   0.07,-135.25) (  -0.08,-135.91)   75.13                80
 02/09/2015   22:17:50   (   0.07,-135.28) (   0.96,-131.38)  445.04                80
 02/11/2015   10:39:34   (  -0.07,-135.33) (   0.25,-136.63)  148.96                80
 02/12/2015   10:18:07   (  -0.07,-135.35) (  -0.80,-132.10)  370.41                80