Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 4 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)
 04/04/2015   10:33:53   (  70.73,  18.61) 04/04/2015   10:32:49  (  70.71,  18.69)    3.28                64
 04/04/2015   11:23:23   ( -70.62,-173.92) 04/04/2015   11:23:31  ( -70.62,-173.84)    3.05                 8
 04/04/2015   12:12:58   (  70.07,  -7.06) 04/04/2015   12:14:07  (  70.09,  -5.70)   51.61                69
 04/07/2015   02:50:24   (  70.70, 134.44) 04/07/2015   02:49:40  (  70.71, 134.48)    1.65                44
 04/07/2015   03:39:54   ( -70.59, -58.09) 04/07/2015   03:40:22  ( -70.61, -58.05)    2.38                28
 04/09/2015   19:06:56   (  70.72,-109.68) 04/09/2015   19:06:30  (  70.71,-109.74)    2.42                26
 04/09/2015   19:56:26   ( -70.61,  57.79) 04/09/2015   19:57:12  ( -70.61,  57.73)    2.28                46
 04/12/2015   10:33:56   ( -71.31,-160.56) 04/12/2015   10:32:47  ( -71.33,-162.33)   63.11                69
 04/12/2015   11:23:33   (  70.67,   6.08) 04/12/2015   11:23:20  (  70.66,   6.11)    0.95                13
 04/12/2015   12:13:03   ( -70.57, 173.56) 04/12/2015   12:14:02  ( -70.56, 173.58)    0.70                59
 04/15/2015   02:50:43   ( -70.87, -45.43) 04/15/2015   02:49:30  ( -70.94, -45.87)   17.84                73
 04/15/2015   03:40:12   (  70.66, 121.90) 04/15/2015   03:40:11  (  70.68, 121.85)    3.24                 1
 04/15/2015   04:29:42   ( -70.56, -70.61) 04/15/2015   04:30:53  ( -70.58, -70.67)    3.02                71
 04/17/2015   19:07:27   ( -70.74,  70.19) 04/17/2015   19:06:17  ( -70.75,  70.21)    1.92                70
 04/17/2015   19:56:54   (  70.64,-122.32) 04/17/2015   19:57:01  (  70.66,-122.32)    2.39                 7
 04/17/2015   20:46:27   ( -70.38,  44.94) 04/17/2015   20:47:39  ( -70.35,  45.49)   20.96                72