Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 5 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)
 05/14/2019   22:25:00   ( -70.17,  20.21) 05/14/2019   22:23:50  ( -70.17,  20.20)    0.39                70
 05/14/2019   23:14:27   (  70.06,-172.31) 05/14/2019   23:14:34  (  70.06,-172.33)    0.73                 7
 05/15/2019   00:04:00   ( -69.79,  -5.05) 05/15/2019   00:05:12  ( -69.75,  -4.55)   19.82                72
 05/17/2019   14:41:32   ( -70.13, 136.02) 05/17/2019   14:40:46  ( -70.13, 136.02)    0.30                46
 05/17/2019   15:30:59   (  70.01, -56.49) 05/17/2019   15:31:30  (  70.02, -56.51)    1.08                31
 05/20/2019   06:08:22   (  70.85,  85.33) 05/20/2019   06:07:14  (  70.93,  83.18)   79.06                68
 05/20/2019   06:58:04   ( -70.09,-108.15) 05/20/2019   06:57:42  ( -70.09,-108.16)    0.48                22
 05/20/2019   07:47:31   (  69.98,  59.33) 05/20/2019   07:48:26  (  69.99,  59.31)    1.71                55
 05/22/2019   22:25:06   (  70.16,-159.82) 05/22/2019   22:23:56  (  70.17,-159.82)    1.21                70
 05/22/2019   23:14:36   ( -70.06,   7.68) 05/22/2019   23:14:38  ( -70.06,   7.65)    1.04                 2
 05/23/2019   00:04:07   (  69.72, 174.85) 05/23/2019   00:05:18  (  69.75, 175.44)   22.66                71
 05/25/2019   14:41:37   (  70.13, -43.98) 05/25/2019   14:40:51  (  70.14, -44.01)    1.52                46
 05/25/2019   15:31:07   ( -70.04, 123.52) 05/25/2019   15:31:33  ( -70.03, 123.47)    2.11                26