Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 10 8.  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)
 10/10/2020   14:42:14   ( -70.22, 136.14) 10/10/2020   14:41:01  ( -70.26, 135.92)    9.53                73
 10/10/2020   15:31:42   (  70.06, -56.44) 10/10/2020   15:31:43  (  70.04, -56.44)    2.00                 1
 10/10/2020   16:21:12   ( -69.95, 111.04) 10/10/2020   16:22:25  ( -69.95, 111.02)    0.93                73
 10/13/2020   06:58:44   ( -70.13,-108.11) 10/13/2020   06:57:52  ( -70.15,-108.14)    2.52                52
 10/13/2020   07:48:11   (  70.02,  59.38) 10/13/2020   07:48:36  (  70.04,  59.33)    2.87                25
 10/13/2020   08:37:56   ( -69.09,-134.24) 10/13/2020   08:39:02  ( -69.10,-131.98)   89.76                66
 10/15/2020   23:15:14   ( -70.09,   7.71) 10/15/2020   23:14:45  ( -70.09,   7.71)    0.70                29
 10/16/2020   00:04:41   (  69.98, 175.20) 10/16/2020   00:05:29  (  69.99, 175.18)    1.23                48
 10/18/2020   14:42:12   (  70.25, -43.80) 10/18/2020   14:40:59  (  70.30, -44.15)   13.89                73
 10/18/2020   15:31:44   ( -70.04, 123.53) 10/18/2020   15:31:38  ( -70.04, 123.56)    1.51                 6
 10/18/2020   16:21:11   (  69.93, -68.99) 10/18/2020   16:22:22  (  69.93, -68.97)    1.12                71
 10/21/2020   06:58:43   (  70.14,  71.92) 10/21/2020   06:57:50  (  70.14,  71.86)    2.31                53
 10/21/2020   07:48:14   ( -69.99,-120.67) 10/21/2020   07:48:31  ( -69.99,-120.59)    2.99                17
 10/21/2020   08:37:54   (  69.15,  45.85) 10/21/2020   08:39:01  (  69.14,  47.95)   83.12                67