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   ( -70.58, 136.62) 03/03/2021   14:40:34  ( -70.63, 135.26)   50.75                71
 03/03/2021   15:31:20   (  70.04, -56.51) 03/03/2021   15:31:09  (  70.04, -56.51)    0.34                11
 03/03/2021   16:20:50   ( -69.93, 110.96) 03/03/2021   16:21:51  ( -69.95, 110.94)    3.27                61
 03/06/2021   06:58:21   ( -70.13,-108.16) 03/06/2021   06:57:19  ( -70.12,-108.16)    0.75                62
 03/06/2021   07:47:48   (  70.02,  59.34) 03/06/2021   07:48:03  (  70.00,  59.32)    2.20                15
 03/06/2021   08:37:26   ( -69.47,-133.78) 03/06/2021   08:38:36  ( -69.44,-132.53)   49.14                70
 03/08/2021   23:14:49   ( -70.11,   7.70) 03/08/2021   23:14:13  ( -70.08,   7.67)    2.72                36
 03/09/2021   00:04:17   (  69.94, 175.11) 03/09/2021   00:04:57  (  69.97, 175.15)    3.23                40
 03/11/2021   14:41:42   (  70.41, -43.62) 03/11/2021   14:40:30  (  70.46, -44.46)   31.75                72
 03/11/2021   15:31:17   ( -70.03, 123.46) 03/11/2021   15:31:06  ( -70.05, 123.49)    2.89                11
 03/11/2021   16:20:44   (  69.91, -69.05) 03/11/2021   16:21:50  (  69.94, -69.03)    2.62                66
 03/14/2021   06:58:15   (  70.10,  71.81) 03/14/2021   06:57:18  (  70.11,  71.85)    2.12                57
 03/14/2021   07:47:45   ( -70.00,-120.70) 03/14/2021   07:48:00  ( -70.02,-120.69)    2.62                15
 03/14/2021   08:37:24   (  69.22,  45.89) 03/14/2021   08:38:31  (  69.21,  47.79)   75.08                67