Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 1 27.  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)
 01/27/2018   22:25:14   (  70.52,-159.33) 01/27/2018   22:24:03  (  70.58,-160.45)   42.09                71
 01/27/2018   23:14:50   ( -70.07,   7.65) 01/27/2018   23:14:37  ( -70.08,   7.65)    1.78                13
 01/28/2018   00:04:17   (  69.97, 175.16) 01/28/2018   00:05:21  (  69.96, 175.15)    1.16                64
 01/30/2018   14:41:48   (  70.15, -43.99) 01/30/2018   14:40:48  (  70.15, -43.98)    0.33                60
 01/30/2018   15:31:18   ( -70.03, 123.48) 01/30/2018   15:31:29  ( -70.01, 123.54)    3.07                11
 01/30/2018   16:20:55   (  69.38, -69.77) 01/30/2018   16:22:03  (  69.36, -68.19)   61.91                68
 02/02/2018   06:58:15   (  70.10,  71.83) 02/02/2018   06:57:40  (  70.13,  71.82)    2.97                35
 02/02/2018   07:47:45   ( -69.99,-120.69) 02/02/2018   07:48:21  ( -69.99,-120.66)    1.43                36
 02/04/2018   22:25:08   ( -70.60,  20.80) 02/04/2018   22:23:57  ( -70.65,  19.46)   49.53                71
 02/04/2018   23:14:43   (  70.05,-172.35) 02/04/2018   23:14:32  (  70.06,-172.30)    2.26                11
 02/05/2018   00:04:12   ( -70.00,  -4.79) 02/05/2018   00:05:14  ( -69.98,  -4.85)    3.32                62
 02/07/2018   14:41:43   ( -70.17, 136.05) 02/07/2018   14:40:41  ( -70.17, 136.01)    1.39                62
 02/07/2018   15:31:10   (  70.06, -56.47) 02/07/2018   15:31:25  (  70.05, -56.50)    1.51                15
 02/07/2018   16:20:48   ( -69.51, 110.42) 02/07/2018   16:21:58  ( -69.49, 111.65)   48.11                70
 02/10/2018   06:58:11   ( -70.11,-108.14) 02/10/2018   06:57:33  ( -70.10,-108.11)    2.10                38
 02/10/2018   07:47:38   (  70.00,  59.34) 02/10/2018   07:48:17  (  69.98,  59.38)    2.12                39