Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 6 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/05/2015   22:38:37   (   0.01,-134.89) (  -0.56,-137.47)  294.16                80
 06/06/2015   22:22:31   (   0.00,-134.85) (   0.42,-132.94)  217.94                80
 06/08/2015   10:41:38   (  -0.02,-134.80) (   0.74,-138.21)  388.65                80
 06/09/2015   10:25:33   (  -0.01,-134.76) (  -0.25,-133.68)  123.10                80
 06/10/2015   22:44:49   (   0.03,-134.67) (  -0.93,-138.99)  491.25                80
 06/11/2015   22:28:44   (   0.02,-134.63) (   0.06,-134.45)   20.18                80
 06/14/2015   10:29:06   (  -0.03,-134.52) (   0.10,-135.19)   76.35                80
 06/15/2015   10:13:00   (  -0.02,-134.47) (  -0.89,-130.66)  434.60                80
 06/16/2015   22:32:15   (   0.04,-134.38) (  -0.34,-135.96)  181.00                80
 06/17/2015   22:16:10   (   0.04,-134.32) (   0.65,-131.42)  329.83                80
 06/19/2015   10:35:17   (  -0.05,-134.26) (   0.50,-136.70)  278.70                80