Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 9 30.  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)
 10/02/2017   14:42:09   ( -70.15, 136.03) 10/02/2017   14:41:25  ( -70.13, 136.09)    3.10                44
 10/02/2017   15:31:36   (  70.05, -56.46) 10/02/2017   15:32:10  (  70.06, -56.49)    1.13                34
 10/05/2017   06:08:59   (  70.81,  85.25) 10/05/2017   06:07:51  (  70.86,  83.36)   69.17                68
 10/05/2017   06:58:40   ( -70.09,-108.17) 10/05/2017   06:58:20  ( -70.10,-108.10)    2.72                20
 10/05/2017   07:48:07   (  69.99,  59.33) 10/05/2017   07:49:04  (  69.97,  59.40)    3.16                57
 10/07/2017   22:25:40   (  70.19,-159.79) 10/07/2017   22:24:34  (  70.21,-159.82)    2.02                66
 10/07/2017   23:15:10   ( -70.08,   7.69) 10/07/2017   23:15:15  ( -70.07,   7.71)    1.69                 5
 10/08/2017   00:04:43   (  69.65, 174.73) 10/08/2017   00:05:53  (  69.63, 175.67)   36.60                70
 10/10/2017   14:42:10   (  70.17, -43.94) 10/10/2017   14:41:29  (  70.18, -44.02)    3.05                41
 10/10/2017   15:31:40   ( -70.07, 123.55) 10/10/2017   15:32:10  ( -70.04, 123.51)    3.30                30
 10/13/2017   06:09:00   ( -70.91, -94.60) 10/13/2017   06:07:52  ( -70.95, -96.80)   79.96                68
 10/13/2017   06:58:40   (  70.09,  71.83) 10/13/2017   06:58:22  (  70.10,  71.87)    1.84                18
 10/13/2017   07:48:10   ( -69.99,-120.68) 10/13/2017   07:49:04  ( -70.01,-120.68)    2.37                54