Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 7 4.  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)
 07/04/2015   04:29:25   ( -70.45, -70.52) 07/04/2015   04:30:04  ( -70.47, -70.58)    2.87                39
 07/06/2015   19:06:50   ( -71.11,  71.09) 07/06/2015   19:05:40  ( -71.16,  69.41)   60.47                70
 07/06/2015   19:56:26   (  70.52,-122.17) 07/06/2015   19:56:14  (  70.54,-122.24)    3.18                12
 07/06/2015   20:45:56   ( -70.41,  45.30) 07/06/2015   20:46:55  ( -70.39,  45.31)    2.70                59
 07/09/2015   11:23:31   ( -70.57,-173.86) 07/09/2015   11:22:22  ( -70.57,-173.83)    1.49                69
 07/09/2015   12:12:58   (  70.47,  -6.37) 07/09/2015   12:13:06  (  70.47,  -6.36)    0.53                 8
 07/09/2015   13:02:32   ( -70.14, 160.78) 07/09/2015   13:03:43  ( -70.10, 161.52)   28.31                71
 07/12/2015   03:40:02   ( -70.57, -57.99) 07/12/2015   03:39:15  ( -70.55, -58.03)    3.07                47
 07/12/2015   04:29:29   (  70.47, 109.50) 07/12/2015   04:29:59  (  70.45, 109.43)    2.87                30
 07/14/2015   19:56:34   ( -70.51,  57.79) 07/14/2015   19:56:08  ( -70.53,  57.76)    3.15                26
 07/14/2015   20:46:01   (  70.40,-134.73) 07/14/2015   20:46:51  (  70.39,-134.70)    1.20                50
 07/17/2015   11:23:32   (  70.70,   6.32) 07/17/2015   11:22:20  (  70.74,   5.88)   17.16                72
 07/17/2015   12:13:04   ( -70.49, 173.64) 07/17/2015   12:12:59  ( -70.47, 173.63)    1.87                 5
 07/17/2015   13:02:31   (  70.38, -18.88) 07/17/2015   13:03:43  (  70.38, -18.92)    1.80                72