Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 7 9.  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)
 07/12/2015   03:40:02   ( -70.54, -58.04) 07/12/2015   03:39:15  ( -70.55, -58.04)    1.22                47
 07/12/2015   04:29:29   (  70.44, 109.46) 07/12/2015   04:29:59  (  70.45, 109.43)    1.40                30
 07/14/2015   19:06:48   (  71.43,-108.39) 07/14/2015   19:05:42  (  71.48,-111.15)   97.73                66
 07/14/2015   19:56:32   ( -70.51,  57.80) 07/14/2015   19:56:06  ( -70.49,  57.84)    2.77                26
 07/14/2015   20:45:59   (  70.41,-134.71) 07/14/2015   20:46:50  (  70.39,-134.70)    1.78                51
 07/17/2015   11:23:32   (  70.62,   6.21) 07/17/2015   11:22:19  (  70.69,   5.96)   12.39                73
 07/17/2015   12:13:03   ( -70.46, 173.61) 07/17/2015   12:12:59  ( -70.48, 173.62)    2.33                 4
 07/17/2015   13:02:30   (  70.35, -18.91) 07/17/2015   13:03:42  (  70.33, -18.84)    3.22                72
 07/20/2015   03:40:03   (  70.56, 122.00) 07/20/2015   03:39:09  (  70.54, 121.98)    2.00                54
 07/20/2015   04:29:33   ( -70.45, -70.53) 07/20/2015   04:29:51  ( -70.43, -70.53)    2.75                18
 07/20/2015   05:19:14   (  69.57,  95.87) 07/20/2015   05:20:20  (  69.54,  98.12)   87.29                66
 07/22/2015   19:56:34   (  70.48,-122.24) 07/22/2015   19:56:01  (  70.49,-122.18)    3.16                33
 07/22/2015   20:46:03   ( -70.43,  45.32) 07/22/2015   20:46:44  ( -70.43,  45.24)    3.08                41