Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 9 11.  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)
 09/11/2018   13:51:52   ( -70.83, 149.45) 09/11/2018   13:50:43  ( -70.90, 147.49)   72.05                69
 09/11/2018   14:41:30   (  70.13, -43.94) 09/11/2018   14:41:14  (  70.11, -43.94)    2.34                16
 09/11/2018   15:31:00   ( -70.02, 123.53) 09/11/2018   15:31:56  ( -70.02, 123.53)    0.32                56
 09/14/2018   06:08:33   ( -70.22, -95.58) 09/14/2018   06:07:26  ( -70.19, -95.60)    3.40                67
 09/14/2018   06:58:01   (  70.06,  71.84) 09/14/2018   06:58:10  (  70.08,  71.88)    2.61                 9
 09/14/2018   07:47:36   ( -69.68,-121.06) 09/14/2018   07:48:47  ( -69.72,-120.26)   31.35                71
 09/16/2018   22:25:04   ( -70.15,  20.20) 09/16/2018   22:24:22  ( -70.16,  20.22)    1.34                42
 09/16/2018   23:14:31   (  70.04,-172.31) 09/16/2018   23:15:06  (  70.05,-172.31)    1.24                35
 09/19/2018   13:51:55   (  70.73, -30.70) 09/19/2018   13:50:46  (  70.76, -32.29)   58.33                69
 09/19/2018   14:41:34   ( -70.13, 136.05) 09/19/2018   14:41:18  ( -70.13, 136.03)    0.92                16
 09/19/2018   15:31:01   (  70.02, -56.46) 09/19/2018   15:32:02  (  70.03, -56.50)    1.81                61
 09/22/2018   06:08:33   (  70.20,  84.41) 09/22/2018   06:07:31  (  70.21,  84.36)    1.86                62
 09/22/2018   06:58:03   ( -70.10,-108.10) 09/22/2018   06:58:13  ( -70.11,-108.16)    2.24                10
 09/22/2018   07:47:39   (  69.49,  58.70) 09/22/2018   07:48:48  (  69.53,  60.02)   51.42                69
 09/24/2018   22:25:03   (  70.17,-159.76) 09/24/2018   22:24:27  (  70.19,-159.83)    3.35                36
 09/24/2018   23:14:34   ( -70.02,   7.66) 09/24/2018   23:15:08  ( -70.03,   7.73)    2.75                34