Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 3 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/18/2014   10:22:09   (  -0.03,-134.79) (  -0.27,-133.68)  126.79                80
 03/19/2014   22:46:49   (   0.02,-134.84) (  -0.93,-138.99)  473.17                80
 03/20/2014   22:25:28   (   0.02,-134.88) (   0.10,-134.47)   46.45                80
 03/23/2014   10:31:19   (  -0.02,-134.97) (   0.03,-135.23)   28.80                80
 03/24/2014   10:09:57   (  -0.02,-135.00) (  -1.01,-130.71)  489.97                80
 03/25/2014   22:34:38   (   0.01,-135.03) (  -0.18,-136.02)  111.77                80
 03/26/2014   22:13:15   (   0.01,-135.06) (   0.80,-131.49)  407.00                80
 03/28/2014   10:37:47   (  -0.01,-135.12) (   0.36,-136.77)  188.25                80
 03/29/2014   10:16:26   (  -0.01,-135.14) (  -0.68,-132.25)  330.07                80
 03/30/2014   22:41:05   (   0.01,-135.16) (  -0.55,-137.55)  272.60                80
 03/31/2014   22:19:44   (   0.01,-135.19) (   0.50,-133.03)  245.69                80