Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 6 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/06/2015   22:22:31   (   0.00,-134.85) (   0.42,-132.94)  217.96                80
 06/08/2015   10:41:38   (  -0.02,-134.80) (   0.73,-138.21)  388.65                80
 06/09/2015   10:25:33   (  -0.01,-134.76) (  -0.25,-133.68)  123.11                80
 06/10/2015   22:44:49   (   0.03,-134.67) (  -0.92,-138.99)  491.19                80
 06/11/2015   22:28:44   (   0.02,-134.63) (   0.07,-134.45)   20.26                80
 06/14/2015   10:29:06   (  -0.03,-134.52) (   0.09,-135.20)   76.29                80
 06/15/2015   10:13:00   (  -0.02,-134.47) (  -0.90,-130.66)  434.72                80
 06/16/2015   22:32:15   (   0.04,-134.38) (  -0.32,-135.96)  180.80                80
 06/17/2015   22:16:10   (   0.04,-134.32) (   0.67,-131.43)  330.02                80
 06/19/2015   10:35:17   (  -0.05,-134.26) (   0.47,-136.70)  278.47                80
 06/20/2015   10:19:12   (  -0.04,-134.20) (  -0.53,-132.17)  232.20                80