Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 4 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)
 04/12/2019   22:24:46   ( -70.62,  20.79) 04/12/2019   22:23:36  ( -70.67,  19.49)   48.26                70
 04/12/2019   23:14:20   (  70.14,-172.28) 04/12/2019   23:14:12  (  70.14,-172.36)    3.12                 8
 04/13/2019   00:03:50   ( -70.03,  -4.81) 04/13/2019   00:04:53  ( -70.00,  -4.83)    3.06                63
 04/15/2019   14:41:22   ( -70.19, 136.03) 04/15/2019   14:40:20  ( -70.20, 136.02)    0.83                62
 04/15/2019   15:30:49   (  70.08, -56.49) 04/15/2019   15:31:04  (  70.09, -56.50)    1.22                15
 04/15/2019   16:20:27   ( -69.53, 110.39) 04/15/2019   16:21:37  ( -69.52, 111.66)   49.42                70
 04/18/2019   06:57:51   ( -70.13,-108.18) 04/18/2019   06:57:12  ( -70.14,-108.11)    2.89                39
 04/18/2019   07:47:18   (  70.02,  59.30) 04/18/2019   07:47:56  (  70.04,  59.36)    3.14                38
 04/20/2019   22:24:42   (  70.60,-159.24) 04/20/2019   22:23:31  (  70.66,-160.47)   45.95                71
 04/20/2019   23:14:19   ( -70.12,   7.69) 04/20/2019   23:14:05  ( -70.14,   7.67)    2.25                14
 04/21/2019   00:03:46   (  70.00, 175.17) 04/21/2019   00:04:48  (  69.99, 175.21)    2.56                62
 04/23/2019   14:41:16   (  70.20, -43.95) 04/23/2019   14:40:14  (  70.20, -43.95)    0.72                62
 04/23/2019   15:30:46   ( -70.11, 123.54) 04/23/2019   15:30:56  ( -70.09, 123.53)    1.82                10
 04/23/2019   16:20:22   (  69.49, -69.66) 04/23/2019   16:21:31  (  69.52, -68.31)   52.82                69