Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 3 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)
 03/27/2021   14:41:37   (  70.41, -43.64) 03/27/2021   14:40:26  (  70.46, -44.45)   30.82                71
 03/27/2021   15:31:11   ( -70.08, 123.51) 03/27/2021   15:31:02  ( -70.07, 123.48)    1.55                 9
 03/27/2021   16:20:39   (  69.92, -69.07) 03/27/2021   16:21:46  (  69.94, -69.02)    3.18                67
 03/30/2021   06:58:09   (  70.16,  71.87) 03/30/2021   06:57:13  (  70.13,  71.83)    2.76                56
 03/30/2021   07:47:39   ( -70.05,-120.65) 03/30/2021   07:47:55  ( -70.06,-120.73)    2.90                16
 03/30/2021   08:37:19   (  69.22,  45.87) 03/30/2021   08:38:26  (  69.24,  47.78)   75.26                67
 04/01/2021   23:14:38   (  70.12,-172.31) 04/01/2021   23:14:07  (  70.13,-172.38)    2.65                31
 04/02/2021   00:04:08   ( -70.01,  -4.82) 04/02/2021   00:04:48  ( -69.99,  -4.85)    2.76                40
 04/04/2021   14:41:34   ( -70.52, 136.50) 04/04/2021   14:40:23  ( -70.55, 135.42)   40.24                71
 04/04/2021   15:31:07   (  70.07, -56.49) 04/04/2021   15:31:00  (  70.07, -56.51)    1.06                 7
 04/04/2021   16:20:37   ( -69.97, 111.00) 04/04/2021   16:21:42  ( -69.98, 110.94)    2.39                65
 04/07/2021   06:58:09   ( -70.14,-108.16) 04/07/2021   06:57:09  ( -70.13,-108.13)    2.31                60
 04/07/2021   07:47:36   (  70.03,  59.31) 04/07/2021   07:47:53  (  70.01,  59.35)    2.22                17
 04/07/2021   08:37:16   ( -69.38,-133.94) 04/07/2021   08:38:25  ( -69.39,-132.42)   59.47                69