Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 2 12.  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)
 02/12/2018   22:25:04   (  70.70,-159.06) 02/12/2018   22:23:54  (  70.75,-160.67)   59.37                70
 02/12/2018   23:14:43   ( -70.09,   7.68) 02/12/2018   23:14:25  ( -70.09,   7.68)    0.25                18
 02/13/2018   00:04:10   (  69.99, 175.18) 02/13/2018   00:05:09  (  69.96, 175.18)    3.04                59
 02/15/2018   14:41:42   (  70.16, -43.98) 02/15/2018   14:40:36  (  70.16, -43.97)    0.61                66
 02/15/2018   15:31:12   ( -70.05, 123.49) 02/15/2018   15:31:17  ( -70.03, 123.55)    2.63                 5
 02/15/2018   16:20:45   (  69.61, -69.47) 02/15/2018   16:21:55  (  69.59, -68.48)   38.30                70
 02/18/2018   06:58:11   (  70.11,  71.82) 02/18/2018   06:57:28  (  70.10,  71.90)    2.94                43
 02/18/2018   07:47:40   ( -70.05,-120.62) 02/18/2018   07:48:10  ( -70.03,-120.66)    3.25                30
 02/20/2018   22:24:58   ( -70.92,  21.27) 02/20/2018   22:23:50  ( -70.96,  19.01)   82.23                68
 02/20/2018   23:14:38   (  70.10,-172.30) 02/20/2018   23:14:20  (  70.10,-172.32)    0.58                18
 02/21/2018   00:04:08   ( -70.00,  -4.82) 02/21/2018   00:05:01  ( -69.97,  -4.79)    3.36                53
 02/23/2018   14:41:40   ( -70.15, 136.01) 02/23/2018   14:40:28  ( -70.17, 136.06)    2.32                72
 02/23/2018   15:31:07   (  70.04, -56.51) 02/23/2018   15:31:12  (  70.05, -56.46)    2.30                 5
 02/23/2018   16:20:39   ( -69.83, 110.83) 02/23/2018   16:21:51  ( -69.81, 111.23)   15.62                72
 02/26/2018   06:58:08   ( -70.14,-108.13) 02/26/2018   06:57:21  ( -70.16,-108.16)    2.49                47
 02/26/2018   07:47:35   (  70.03,  59.35) 02/26/2018   07:48:05  (  70.05,  59.32)    2.71                30