Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2016 9 13.  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)
 09/13/2016   14:42:08   ( -70.18, 136.09) 09/13/2016   14:41:07  ( -70.16, 136.13)    2.25                61
 09/13/2016   15:31:35   (  70.07, -56.42) 09/13/2016   15:31:52  (  70.09, -56.46)    3.16                17
 09/13/2016   16:21:14   ( -69.47, 110.38) 09/13/2016   16:22:23  ( -69.43, 111.84)   56.94                69
 09/16/2016   06:58:38   ( -70.14,-108.08) 09/16/2016   06:58:00  ( -70.15,-108.08)    1.16                38
 09/16/2016   07:48:05   (  70.03,  59.41) 09/16/2016   07:48:44  (  70.03,  59.41)    0.32                39
 09/18/2016   22:25:30   (  70.64,-159.11) 09/18/2016   22:24:20  (  70.70,-160.49)   51.59                70
 09/18/2016   23:15:08   ( -70.10,   7.74) 09/18/2016   23:14:52  ( -70.09,   7.79)    2.29                16
 09/19/2016   00:04:35   (  69.98, 175.22) 09/19/2016   00:05:36  (  69.97, 175.28)    2.51                61
 09/21/2016   14:42:06   (  70.20, -43.87) 09/21/2016   14:41:02  (  70.17, -43.87)    3.33                64
 09/21/2016   15:31:36   ( -70.10, 123.62) 09/21/2016   15:31:44  ( -70.08, 123.58)    2.64                 8
 09/21/2016   16:21:11   (  69.54, -69.50) 09/21/2016   16:22:20  (  69.54, -68.31)   46.51                69
 09/24/2016   06:58:36   (  70.14,  71.93) 09/24/2016   06:57:55  (  70.17,  71.91)    3.01                41
 09/24/2016   07:48:06   ( -70.04,-120.57) 09/24/2016   07:48:36  ( -70.02,-120.55)    2.26                30
 09/26/2016   22:25:25   ( -70.96,  21.39) 09/26/2016   22:24:18  ( -71.01,  19.02)   85.93                67
 09/26/2016   23:15:05   (  70.13,-172.20) 09/26/2016   23:14:47  (  70.11,-172.23)    2.12                18
 09/27/2016   00:04:35   ( -70.03,  -4.70) 09/27/2016   00:05:29  ( -70.02,  -4.77)    2.92                54