Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 2 7.  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, -43.11) 02/07/2021   14:40:41  (  70.81, -45.03)   70.76                68
 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)    0.93                57
 02/10/2021   06:58:29   (  70.11,  71.83) 02/10/2021   06:57:23  (  70.12,  71.83)    1.33                66
 02/10/2021   07:47:59   ( -69.99,-120.69) 02/10/2021   07:48:05  ( -70.02,-120.70)    3.34                 6
 02/10/2021   08:37:32   (  69.56,  46.35) 02/10/2021   08:38:42  (  69.54,  47.32)   37.47                70
 02/12/2021   23:14:58   (  70.08,-172.33) 02/12/2021   23:14:17  (  70.07,-172.32)    1.24                41
 02/13/2021   00:04:28   ( -69.96,  -4.86) 02/13/2021   00:04:59  ( -69.97,  -4.85)    0.55                31
 02/15/2021   14:41:49   ( -70.75, 136.88) 02/15/2021   14:40:40  ( -70.80, 134.98)   69.88                69
 02/15/2021   15:31:27   (  70.04, -56.51) 02/15/2021   15:31:11  (  70.01, -56.46)    3.20                16
 02/15/2021   16:20:57   ( -69.93, 110.97) 02/15/2021   16:21:53  ( -69.91, 111.01)    2.21                56
 02/18/2021   06:58:28   ( -70.11,-108.18) 02/18/2021   06:57:21  ( -70.12,-108.16)    1.37                67
 02/18/2021   07:47:55   (  70.00,  59.31) 02/18/2021   07:48:05  (  70.02,  59.30)    2.10                10
 02/18/2021   08:37:30   ( -69.62,-133.58) 02/18/2021   08:38:41  ( -69.60,-132.75)   32.03                71
 02/20/2021   23:14:57   ( -70.06,   7.64) 02/20/2021   23:14:15  ( -70.07,   7.69)    1.73                42
 02/21/2021   00:04:24   (  69.95, 175.13) 02/21/2021   00:04:59  (  69.97, 175.15)    1.83                35