Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 2 6.  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)
 02/07/2021   14:41:49   (  70.74, -43.12) 02/07/2021   14:40:40  (  70.76, -44.95)   67.32                69
 02/07/2021   15:31:30   ( -70.02, 123.46) 02/07/2021   15:31:10  ( -70.03, 123.52)    2.27                20
 02/07/2021   16:20:57   (  69.92, -69.03) 02/07/2021   16:21:54  (  69.92, -69.01)    0.86                57
 02/10/2021   06:58:29   (  70.11,  71.83) 02/10/2021   06:57:23  (  70.12,  71.83)    1.50                66
 02/10/2021   07:47:59   ( -69.99,-120.69) 02/10/2021   07:48:05  ( -70.02,-120.70)    3.25                 6
 02/10/2021   08:37:32   (  69.56,  46.35) 02/10/2021   08:38:42  (  69.54,  47.32)   37.45                70
 02/12/2021   23:14:58   (  70.08,-172.33) 02/12/2021   23:14:17  (  70.07,-172.32)    1.21                41
 02/13/2021   00:04:28   ( -69.97,  -4.86) 02/13/2021   00:04:59  ( -69.97,  -4.85)    0.37                31
 02/15/2021   14:41:49   ( -70.75, 136.89) 02/15/2021   14:40:40  ( -70.80, 134.99)   69.94                69
 02/15/2021   15:31:27   (  70.04, -56.50) 02/15/2021   15:31:11  (  70.01, -56.46)    3.31                16
 02/15/2021   16:20:57   ( -69.93, 110.98) 02/15/2021   16:21:53  ( -69.91, 111.01)    2.54                56
 02/18/2021   06:58:28   ( -70.11,-108.17) 02/18/2021   06:57:21  ( -70.12,-108.16)    0.72                67
 02/18/2021   07:47:55   (  70.00,  59.32) 02/18/2021   07:48:05  (  70.01,  59.31)    1.72                10
 02/18/2021   08:37:30   ( -69.62,-133.57) 02/18/2021   08:38:41  ( -69.59,-132.75)   31.92                71