Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 1 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/12/2015   22:41:11   (   0.11,-134.86) (  -0.46,-137.53)  302.99                80
 01/13/2015   22:25:03   (   0.10,-134.83) (   0.50,-132.98)  209.94                80
 01/15/2015   10:46:49   (  -0.10,-134.80) (   0.64,-138.25)  392.56                80
 01/16/2015   10:28:01   (  -0.10,-134.76) (  -0.33,-133.71)  119.63                80
 01/17/2015   22:47:14   (   0.10,-134.65) (  -0.86,-139.01)  496.84                80
 01/18/2015   22:31:07   (   0.09,-134.60) (   0.11,-134.46)   15.17                80
 01/21/2015   10:34:05   (  -0.09,-134.51) (   0.05,-135.19)   77.09                80
 01/22/2015   10:12:37   (  -0.09,-134.46) (  -0.92,-130.65)  434.05                80
 01/23/2015   22:34:31   (   0.09,-134.33) (  -0.26,-135.95)  183.93                80
 01/24/2015   22:18:23   (   0.09,-134.28) (   0.71,-131.40)  327.20                80
 01/26/2015   10:40:07   (  -0.09,-134.24) (   0.47,-136.67)  276.95                80