Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 5 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/10/2014   10:32:57   (   0.03,-135.10) (   0.09,-135.33)   26.30                80
 05/11/2014   10:11:34   (   0.03,-135.07) (  -0.90,-130.80)  486.52                80
 05/12/2014   22:33:33   (  -0.03,-135.02) (  -0.26,-136.10)  123.68                80
 05/13/2014   22:17:30   (  -0.03,-134.98) (   0.73,-131.57)  388.78                80
 05/15/2014   10:36:40   (   0.02,-134.92) (   0.43,-136.84)  218.03                80
 05/16/2014   10:20:37   (   0.02,-134.88) (  -0.56,-132.31)  293.74                80
 05/17/2014   22:39:55   (  -0.01,-134.81) (  -0.65,-137.60)  318.46                80
 05/18/2014   22:23:51   (  -0.02,-134.77) (   0.34,-133.07)  193.16                80
 05/20/2014   10:43:02   (   0.01,-134.70) (   0.81,-138.34)  414.43                80
 05/21/2014   10:26:58   (   0.02,-134.65) (  -0.18,-133.81)   96.78                80