Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 9 26.  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)
 09/27/2021   14:42:16   ( -70.06, 135.93) 09/27/2021   14:41:40  ( -70.09, 135.93)    2.68                36
 09/27/2021   15:31:43   (  69.97, -56.57) 09/27/2021   15:32:24  (  69.98, -56.59)    1.46                41
 09/30/2021   06:09:11   (  70.48,  84.76) 09/30/2021   06:08:00  (  70.50,  83.73)   38.36                71
 09/30/2021   06:58:47   ( -70.03,-108.24) 09/30/2021   06:58:35  ( -70.04,-108.22)    1.07                12
 09/30/2021   07:48:14   (  69.93,  59.26) 09/30/2021   07:49:19  (  69.93,  59.26)    0.46                65
 10/02/2021   22:25:48   (  70.11,-159.89) 10/02/2021   22:24:48  (  70.09,-159.84)    2.94                60
 10/02/2021   23:15:18   ( -70.00,   7.59) 10/02/2021   23:15:30  ( -69.99,   7.63)    2.24                12
 10/03/2021   00:04:55   (  69.34, 174.34) 10/03/2021   00:06:04  (  69.35, 175.87)   60.33                69
 10/05/2021   14:42:19   (  70.08, -44.07) 10/05/2021   14:41:44  (  70.10, -44.09)    2.94                35
 10/05/2021   15:31:49   ( -69.97, 123.42) 10/05/2021   15:32:26  ( -69.99, 123.39)    3.10                37
 10/08/2021   06:09:14   ( -70.58, -95.09) 10/08/2021   06:08:03  ( -70.63, -96.46)   50.89                71
 10/08/2021   06:58:49   (  70.04,  71.76) 10/08/2021   06:58:38  (  70.06,  71.74)    2.59                11
 10/08/2021   07:48:19   ( -69.93,-120.75) 10/08/2021   07:49:20  ( -69.95,-120.77)    2.19                61