Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 1 25.  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,-159.32) 01/27/2018   22:24:03  (  70.58,-160.44)   41.96                71
 01/27/2018   23:14:50   ( -70.08,   7.67) 01/27/2018   23:14:37  ( -70.08,   7.66)    0.14                13
 01/28/2018   00:04:17   (  69.98, 175.17) 01/28/2018   00:05:21  (  69.95, 175.16)    2.38                64
 01/30/2018   14:41:47   (  70.16, -43.97) 01/30/2018   14:40:47  (  70.14, -43.98)    1.53                60
 01/30/2018   15:31:17   ( -70.04, 123.50) 01/30/2018   15:31:29  ( -70.06, 123.47)    2.10                12
 01/30/2018   16:20:54   (  69.38, -69.76) 01/30/2018   16:22:03  (  69.41, -68.26)   58.60                69
 02/02/2018   06:58:15   (  70.11,  71.85) 02/02/2018   06:57:40  (  70.13,  71.82)    1.90                35
 02/02/2018   07:47:45   ( -70.01,-120.67) 02/02/2018   07:48:21  ( -69.99,-120.65)    1.75                36
 02/04/2018   22:25:08   ( -70.62,  20.82) 02/04/2018   22:23:58  ( -70.70,  19.38)   54.10                70
 02/04/2018   23:14:43   (  70.07,-172.33) 02/04/2018   23:14:32  (  70.06,-172.30)    1.20                11
 02/05/2018   00:04:13   ( -69.96,  -4.85) 02/05/2018   00:05:14  ( -69.98,  -4.85)    1.71                61
 02/07/2018   14:41:43   ( -70.19, 136.08) 02/07/2018   14:40:41  ( -70.17, 136.01)    3.52                62
 02/07/2018   15:31:10   (  70.07, -56.44) 02/07/2018   15:31:25  (  70.06, -56.51)    3.48                15
 02/07/2018   16:20:48   ( -69.53, 110.45) 02/07/2018   16:21:58  ( -69.49, 111.64)   46.80                70