Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 2 17.  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)
 02/18/2018   06:58:11   (  70.11,  71.82) 02/18/2018   06:57:28  (  70.10,  71.90)    2.92                43
 02/18/2018   07:47:40   ( -70.05,-120.63) 02/18/2018   07:48:10  ( -70.03,-120.67)    2.22                30
 02/20/2018   22:24:58   ( -70.92,  21.26) 02/20/2018   22:23:50  ( -70.96,  18.99)   82.35                68
 02/20/2018   23:14:38   (  70.10,-172.30) 02/20/2018   23:14:20  (  70.10,-172.32)    0.64                18
 02/21/2018   00:04:08   ( -69.99,  -4.83) 02/21/2018   00:05:01  ( -69.98,  -4.81)    2.03                53
 02/23/2018   14:41:39   ( -70.20, 136.07) 02/23/2018   14:40:28  ( -70.18, 136.04)    3.33                71
 02/23/2018   15:31:07   (  70.04, -56.51) 02/23/2018   15:31:12  (  70.05, -56.46)    2.37                 5
 02/23/2018   16:20:39   ( -69.82, 110.81) 02/23/2018   16:21:51  ( -69.82, 111.21)   15.33                72
 02/26/2018   06:58:08   ( -70.14,-108.14) 02/26/2018   06:57:20  ( -70.12,-108.10)    2.34                48
 02/26/2018   07:47:35   (  70.03,  59.35) 02/26/2018   07:48:04  (  70.00,  59.39)    3.15                29
 02/28/2018   22:24:53   (  70.94,-158.70) 02/28/2018   22:23:46  (  71.00,-161.05)   85.31                67
 02/28/2018   23:14:36   ( -70.12,   7.72) 02/28/2018   23:14:13  ( -70.13,   7.68)    1.57                23
 03/01/2018   00:04:03   (  70.01, 175.20) 03/01/2018   00:04:57  (  70.01, 175.16)    1.49                54
 03/03/2018   14:41:34   (  70.15, -44.00) 03/03/2018   14:40:22  (  70.17, -43.92)    3.47                72
 03/03/2018   15:31:03   ( -70.10, 123.57) 03/03/2018   15:31:04  ( -70.08, 123.53)    3.23                 1
 03/03/2018   16:20:33   (  69.82, -69.18) 03/03/2018   16:21:45  (  69.81, -68.75)   16.55                72