Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 12 14.  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)
 12/16/2020   06:58:36   ( -70.61,-107.43) 12/16/2020   06:57:26  ( -70.64,-108.90)   54.36                70
 12/16/2020   07:48:12   (  70.01,  59.34) 12/16/2020   07:48:00  (  69.99,  59.42)    3.53                12
 12/16/2020   08:37:42   ( -69.90,-133.18) 12/16/2020   08:38:42  ( -69.91,-133.14)    1.85                60
 12/18/2020   23:15:14   ( -70.10,   7.70) 12/18/2020   23:14:12  ( -70.11,   7.69)    1.76                62
 12/19/2020   00:04:41   (  69.99, 175.19) 12/19/2020   00:04:56  (  70.00, 175.18)    0.81                15
 12/19/2020   00:54:19   ( -69.44, -17.92) 12/19/2020   00:55:29  ( -69.43, -16.67)   48.71                70
 12/21/2020   15:31:43   ( -70.08, 123.55) 12/21/2020   15:31:07  ( -70.06, 123.53)    1.82                36
 12/21/2020   16:21:10   (  69.96, -68.96) 12/21/2020   16:21:51  (  69.95, -68.98)    2.11                41
 12/24/2020   06:58:37   (  70.37,  72.22) 12/24/2020   06:57:25  (  70.42,  71.42)   30.60                72
 12/24/2020   07:48:12   ( -69.99,-120.68) 12/24/2020   07:48:01  ( -70.01,-120.62)    3.02                11
 12/24/2020   08:37:39   (  69.88,  46.80) 12/24/2020   08:38:45  (  69.90,  46.85)    3.26                66
 12/26/2020   23:15:10   (  70.11,-172.27) 12/26/2020   23:14:15  (  70.12,-172.33)    2.62                55
 12/27/2020   00:04:41   ( -69.96,  -4.85) 12/27/2020   00:04:56  ( -69.96,  -4.79)    2.53                15
 12/27/2020   00:54:20   (  69.18, 161.74) 12/27/2020   00:55:27  (  69.16, 163.68)   76.92                67