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, 136.12)    2.18                61
 09/13/2016   15:31:35   (  70.07, -56.42) 09/13/2016   15:31:51  (  70.05, -56.39)    2.94                16
 09/13/2016   16:21:14   ( -69.47, 110.38) 09/13/2016   16:22:23  ( -69.43, 111.84)   56.89                69
 09/16/2016   06:58:38   ( -70.14,-108.08) 09/16/2016   06:58:00  ( -70.15,-108.09)    1.64                38
 09/16/2016   07:48:05   (  70.03,  59.41) 09/16/2016   07:48:44  (  70.04,  59.40)    1.23                39
 09/18/2016   22:25:30   (  70.64,-159.11) 09/18/2016   22:24:20  (  70.71,-160.51)   52.55                70
 09/18/2016   23:15:08   ( -70.10,   7.74) 09/18/2016   23:14:52  ( -70.10,   7.78)    1.62                16
 09/19/2016   00:04:35   (  69.98, 175.22) 09/19/2016   00:05:36  (  69.98, 175.26)    1.51                61
 09/21/2016   14:42:06   (  70.20, -43.87) 09/21/2016   14:41:02  (  70.19, -43.90)    1.72                64
 09/21/2016   15:31:36   ( -70.10, 123.62) 09/21/2016   15:31:44  ( -70.10, 123.56)    2.55                 8
 09/21/2016   16:21:10   (  69.60, -69.43) 09/21/2016   16:22:20  (  69.56, -68.33)   42.64                70
 09/24/2016   06:58:36   (  70.14,  71.93) 09/24/2016   06:57:54  (  70.14,  71.95)    0.86                42
 09/24/2016   07:48:06   ( -70.04,-120.57) 09/24/2016   07:48:36  ( -70.05,-120.59)    0.75                30
 09/26/2016   22:25:25   ( -70.96,  21.39) 09/26/2016   22:24:17  ( -70.99,  19.06)   84.58                68
 09/26/2016   23:15:05   (  70.13,-172.20) 09/26/2016   23:14:47  (  70.15,-172.28)    3.62                18
 09/27/2016   00:04:36   ( -69.98,  -4.78) 09/27/2016   00:05:28  ( -70.00,  -4.74)    2.96                52