Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 12 26.  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)
 12/27/2015   05:19:34   (  70.32,  96.87) 12/27/2015   05:18:36  (  70.31,  96.93)    2.27                58
 12/27/2015   06:09:04   ( -70.20, -95.66) 12/27/2015   06:09:18  ( -70.22, -95.62)    2.90                14
 12/27/2015   06:58:42   (  69.50,  71.00) 12/27/2015   06:59:50  (  69.47,  72.81)   70.55                68
 12/29/2015   21:36:03   (  70.29,-147.30) 12/29/2015   21:35:29  (  70.30,-147.28)    1.59                34
 12/29/2015   22:25:33   ( -70.17,  20.17) 12/29/2015   22:26:10  ( -70.16,  20.25)    3.23                37
 01/01/2016   13:02:57   ( -70.78, 161.68) 01/01/2016   13:01:46  ( -70.82, 160.34)   49.36                71
 01/01/2016   13:52:32   (  70.24, -31.48) 01/01/2016   13:52:21  (  70.24, -31.42)    2.23                11
 01/01/2016   14:42:02   ( -70.13, 136.00) 01/01/2016   14:43:03  ( -70.15, 136.03)    2.94                61
 01/04/2016   05:19:32   ( -70.34, -83.09) 01/04/2016   05:18:29  ( -70.35, -83.13)    1.66                63
 01/04/2016   06:08:59   (  70.24,  84.40) 01/04/2016   06:09:13  (  70.24,  84.36)    1.66                14
 01/04/2016   06:58:37   ( -69.69,-108.73) 01/04/2016   06:59:47  ( -69.73,-107.55)   45.73                70
 01/06/2016   21:36:01   ( -70.28,  32.70) 01/06/2016   21:35:21  ( -70.30,  32.72)    2.78                40
 01/06/2016   22:25:28   (  70.17,-159.82) 01/06/2016   22:26:05  (  70.19,-159.79)    2.68                37
 01/09/2016   13:02:51   (  70.79, -18.28) 01/09/2016   13:01:41  (  70.87, -19.74)   53.80                70
 01/09/2016   13:52:29   ( -70.25, 148.55) 01/09/2016   13:52:13  ( -70.25, 148.57)    0.92                16
 01/09/2016   14:41:56   (  70.14, -43.97) 01/09/2016   14:42:57  (  70.14, -43.95)    1.03                61