Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 5 30.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/30/2015   10:33:23   ( -71.48,-160.06) 05/30/2015   10:32:16  ( -71.53,-162.72)   94.14                67
 05/30/2015   11:23:05   (  70.57,   6.16) 05/30/2015   11:22:44  (  70.57,   6.21)    2.00                21
 05/30/2015   12:12:34   ( -70.51, 173.70) 05/30/2015   12:13:26  ( -70.50, 173.65)    2.77                52
 06/02/2015   02:50:09   ( -70.71, -45.41) 06/02/2015   02:48:56  ( -70.77, -45.66)   11.85                73
 06/02/2015   03:39:37   (  70.56, 122.01) 06/02/2015   03:39:38  (  70.54, 122.02)    1.36                 1
 06/02/2015   04:29:07   ( -70.44, -70.53) 06/02/2015   04:30:20  ( -70.47, -70.54)    2.59                73
 06/04/2015   19:06:41   ( -70.63,  70.35) 06/04/2015   19:05:47  ( -70.64,  70.32)    1.86                54
 06/04/2015   19:56:08   (  70.53,-122.16) 06/04/2015   19:56:31  (  70.52,-122.18)    0.85                23
 06/04/2015   20:45:52   ( -69.65,  44.22) 06/04/2015   20:46:58  ( -69.65,  46.47)   86.89                66
 06/07/2015   11:23:13   ( -70.59,-173.83) 06/07/2015   11:22:41  ( -70.62,-173.88)    3.21                32
 06/07/2015   12:12:40   (  70.49,  -6.35) 06/07/2015   12:13:25  (  70.50,  -6.38)    2.01                45
 06/10/2015   02:50:10   (  70.92, 134.91) 06/10/2015   02:48:59  (  71.00, 133.94)   36.43                71
 06/10/2015   03:39:45   ( -70.55, -58.02) 06/10/2015   03:39:34  ( -70.54, -57.99)    1.25                11
 06/10/2015   04:29:12   (  70.44, 109.46) 06/10/2015   04:30:18  (  70.43, 109.50)    1.62                66
 06/12/2015   19:06:46   (  70.64,-109.63) 06/12/2015   19:05:46  (  70.62,-109.67)    3.20                60
 06/12/2015   19:56:16   ( -70.54,  57.85) 06/12/2015   19:56:28  ( -70.52,  57.80)    3.07                12
 06/12/2015   20:45:53   (  69.88,-135.46) 06/12/2015   20:47:02  (  69.88,-133.90)   59.49                69