Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 3 1.  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)
 03/03/2021   14:41:45   ( -70.59, 136.65) 03/03/2021   14:40:35  ( -70.67, 135.20)   54.04                70
 03/03/2021   15:31:20   (  70.06, -56.49) 03/03/2021   15:31:10  (  70.08, -56.56)    3.53                10
 03/03/2021   16:20:50   ( -69.94, 110.98) 03/03/2021   16:21:51  ( -69.94, 110.97)    0.50                61
 03/06/2021   06:58:22   ( -70.09,-108.22) 03/06/2021   06:57:19  ( -70.11,-108.14)    3.66                63
 03/06/2021   07:47:49   (  69.98,  59.28) 03/06/2021   07:48:03  (  69.99,  59.35)    2.57                14
 03/06/2021   08:37:27   ( -69.43,-133.84) 03/06/2021   08:38:36  ( -69.43,-132.51)   52.09                69
 03/08/2021   23:14:49   ( -70.06,   7.63) 03/08/2021   23:14:12  ( -70.07,   7.69)    2.18                37
 03/09/2021   00:04:16   (  69.95, 175.13) 03/09/2021   00:04:56  (  69.95, 175.17)    1.67                40
 03/11/2021   14:41:42   (  70.42, -43.61) 03/11/2021   14:40:31  (  70.50, -44.53)   35.31                71
 03/11/2021   15:31:17   ( -70.03, 123.47) 03/11/2021   15:31:06  ( -70.04, 123.51)    1.36                11
 03/11/2021   16:20:44   (  69.92, -69.04) 03/11/2021   16:21:50  (  69.92, -69.01)    1.04                66
 03/14/2021   06:58:15   (  70.10,  71.82) 03/14/2021   06:57:18  (  70.10,  71.87)    1.83                57
 03/14/2021   07:47:45   ( -70.00,-120.69) 03/14/2021   07:48:00  ( -70.01,-120.67)    1.21                15
 03/14/2021   08:37:24   (  69.22,  45.90) 03/14/2021   08:38:31  (  69.20,  47.81)   75.39                67