Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 3 9.  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)
 03/11/2018   14:41:31   ( -70.18, 136.04) 03/11/2018   14:40:29  ( -70.16, 136.06)    2.63                62
 03/11/2018   15:30:58   (  70.08, -56.47) 03/11/2018   15:31:14  (  70.09, -56.52)    2.39                16
 03/11/2018   16:20:37   ( -69.47, 110.33) 03/11/2018   16:21:46  ( -69.48, 111.70)   53.32                69
 03/14/2018   06:57:58   ( -70.15,-108.13) 03/14/2018   06:57:24  ( -70.13,-108.14)    1.72                34
 03/14/2018   07:47:25   (  70.04,  59.36) 03/14/2018   07:48:08  (  70.01,  59.35)    3.29                43
 03/16/2018   22:24:54   (  70.33,-159.62) 03/16/2018   22:23:41  (  70.36,-160.04)   16.06                73
 03/16/2018   23:14:26   ( -70.11,   7.70) 03/16/2018   23:14:20  ( -70.11,   7.66)    1.39                 6
 03/17/2018   00:03:53   (  70.00, 175.19) 03/17/2018   00:05:04  (  69.99, 175.15)    1.63                71
 03/19/2018   14:41:24   (  70.17, -43.97) 03/19/2018   14:40:34  (  70.19, -44.00)    1.95                50
 03/19/2018   15:30:54   ( -70.07, 123.52) 03/19/2018   15:31:16  ( -70.09, 123.46)    3.27                22
 03/19/2018   16:20:37   (  69.07, -70.18) 03/19/2018   16:21:43  (  69.07, -67.75)   96.57                66
 03/22/2018   06:57:52   (  70.12,  71.85) 03/22/2018   06:57:29  (  70.12,  71.86)    0.94                23
 03/22/2018   07:47:22   ( -70.02,-120.66) 03/22/2018   07:48:11  ( -70.02,-120.67)    0.36                49