Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 12 15.  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,-107.44) 12/16/2020   06:57:26  ( -70.64,-108.91)   54.42                70
 12/16/2020   07:48:12   (  70.01,  59.34) 12/16/2020   07:48:00  (  69.99,  59.42)    3.50                12
 12/16/2020   08:37:42   ( -69.90,-133.18) 12/16/2020   08:38:42  ( -69.91,-133.14)    1.96                60
 12/18/2020   23:15:14   ( -70.10,   7.70) 12/18/2020   23:14:12  ( -70.12,   7.69)    2.09                62
 12/19/2020   00:04:41   (  69.99, 175.20) 12/19/2020   00:04:56  (  70.00, 175.18)    0.94                15
 12/19/2020   00:54:19   ( -69.44, -17.92) 12/19/2020   00:55:29  ( -69.44, -16.68)   48.56                70
 12/21/2020   15:31:43   ( -70.08, 123.55) 12/21/2020   15:31:07  ( -70.07, 123.53)    1.66                36
 12/21/2020   16:21:10   (  69.97, -68.96) 12/21/2020   16:21:51  (  69.95, -68.99)    2.14                41
 12/24/2020   06:58:37   (  70.37,  72.23) 12/24/2020   06:57:25  (  70.43,  71.41)   31.11                72
 12/24/2020   07:48:12   ( -70.00,-120.68) 12/24/2020   07:48:01  ( -70.02,-120.63)    3.03                11
 12/24/2020   08:37:39   (  69.88,  46.80) 12/24/2020   08:38:45  (  69.91,  46.84)    3.18                66
 12/26/2020   23:15:11   (  70.06,-172.34) 12/26/2020   23:14:14  (  70.07,-172.27)    2.95                57
 12/27/2020   00:04:41   ( -69.96,  -4.85) 12/27/2020   00:04:56  ( -69.97,  -4.80)    2.07                15
 12/27/2020   00:54:20   (  69.18, 161.74) 12/27/2020   00:55:27  (  69.17, 163.67)   76.20                67