Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 12 24.  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)
 12/24/2015   13:03:01   (  70.56, -18.65) 12/24/2015   13:01:49  (  70.64, -19.36)   27.53                72
 12/24/2015   13:52:34   ( -70.28, 148.57) 12/24/2015   13:52:26  ( -70.28, 148.52)    2.06                 8
 12/24/2015   14:42:01   (  70.18, -43.93) 12/24/2015   14:43:10  (  70.17, -44.00)    3.18                69
 12/27/2015   05:19:34   (  70.31,  96.86) 12/27/2015   05:18:36  (  70.30,  96.94)    3.05                58
 12/27/2015   06:09:04   ( -70.20, -95.67) 12/27/2015   06:09:18  ( -70.21, -95.60)    3.14                14
 12/27/2015   06:58:43   (  69.43,  70.92) 12/27/2015   06:59:50  (  69.46,  72.82)   74.48                67
 12/29/2015   21:36:02   (  70.31,-147.26) 12/29/2015   21:35:29  (  70.29,-147.27)    2.12                33
 12/29/2015   22:25:32   ( -70.20,  20.22) 12/29/2015   22:26:11  ( -70.20,  20.19)    0.95                39
 01/01/2016   13:02:57   ( -70.72, 161.60) 01/01/2016   13:01:46  ( -70.81, 160.36)   46.18                71
 01/01/2016   13:52:29   (  70.29, -31.41) 01/01/2016   13:52:21  (  70.28, -31.48)    2.86                 8
 01/01/2016   14:42:00   ( -70.12, 135.99) 01/01/2016   14:43:02  ( -70.14, 136.06)    2.90                62
 01/04/2016   05:19:30   ( -70.35, -83.07) 01/04/2016   05:18:29  ( -70.33, -83.10)    2.61                61
 01/04/2016   06:08:57   (  70.24,  84.42) 01/04/2016   06:09:13  (  70.22,  84.38)    2.49                16
 01/04/2016   06:58:36   ( -69.64,-108.79) 01/04/2016   06:59:45  ( -69.60,-107.37)   55.24                69
 01/06/2016   21:35:58   ( -70.29,  32.73) 01/06/2016   21:35:21  ( -70.27,  32.76)    2.02                37
 01/06/2016   22:25:25   (  70.17,-159.79) 01/06/2016   22:26:05  (  70.16,-159.76)    1.57                40