Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 6 10.  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)
 06/12/2018   22:24:18   ( -70.15,  20.22) 06/12/2018   22:23:50  ( -70.18,  20.21)    3.47                28
 06/12/2018   23:13:45   (  70.05,-172.28) 06/12/2018   23:14:34  (  70.06,-172.28)    0.83                49
 06/15/2018   13:51:18   (  70.31, -31.30) 06/15/2018   13:50:05  (  70.37, -31.63)   13.65                73
 06/15/2018   14:40:49   ( -70.16, 136.10) 06/15/2018   14:40:44  ( -70.13, 136.06)    2.88                 5
 06/15/2018   15:30:17   (  69.99, -56.48) 06/15/2018   15:31:28  (  70.01, -56.44)    2.47                71
 06/18/2018   06:07:50   (  70.20,  84.41) 06/18/2018   06:06:56  (  70.22,  84.39)    2.09                54
 06/18/2018   06:57:20   ( -70.10,-108.10) 06/18/2018   06:57:37  ( -70.08,-108.09)    1.90                17
 06/18/2018   07:47:01   (  69.21,  58.34) 06/18/2018   07:48:07  (  69.22,  60.49)   85.20                66
 06/20/2018   22:24:21   (  70.19,-159.72) 06/20/2018   22:23:50  (  70.17,-159.77)    3.00                31
 06/20/2018   23:13:52   ( -70.04,   7.69) 06/20/2018   23:14:31  ( -70.03,   7.76)    2.68                39
 06/23/2018   13:51:19   ( -70.63, 149.15) 06/23/2018   13:50:08  ( -70.66, 147.92)   45.56                71
 06/23/2018   14:40:53   (  70.13, -43.93) 06/23/2018   14:40:44  (  70.13, -43.92)    0.53                 9
 06/23/2018   15:30:23   ( -70.03, 123.56) 06/23/2018   15:31:26  ( -70.04, 123.53)    1.46                63