Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 2 2.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 02/03/2023   14:53:27   ( -70.25, 132.75) 02/03/2023   14:54:39  ( -70.20, 132.93)    9.20                72
 02/03/2023   15:44:09   (  70.03, -59.60) 02/03/2023   15:44:07  (  70.04, -59.65)    2.05                 2
 02/03/2023   16:34:50   ( -69.89, 107.93) 02/03/2023   16:33:37  ( -69.93, 107.83)    5.33                73
 02/06/2023   07:10:16   ( -70.11,-111.25) 02/06/2023   07:11:08  ( -70.12,-111.30)    2.28                52
 02/06/2023   08:01:00   (  70.00,  56.23) 02/06/2023   08:00:35  (  70.01,  56.19)    2.23                25
 02/06/2023   08:51:26   ( -69.06,-135.10) 02/06/2023   08:50:19  ( -69.13,-137.37)   90.27                67
 02/08/2023   23:27:08   ( -70.08,   4.57) 02/08/2023   23:27:37  ( -70.08,   4.51)    2.37                29
 02/09/2023   00:17:52   (  69.97, 172.05) 02/09/2023   00:17:04  (  69.96, 172.00)    1.83                48
 02/11/2023   14:53:22   (  70.36, -47.40) 02/11/2023   14:54:33  (  70.28, -46.95)   18.99                71
 02/11/2023   15:44:00   ( -70.05, 120.39) 02/11/2023   15:44:05  ( -70.07, 120.38)    1.87                 5
 02/11/2023   16:34:44   (  69.94, -72.14) 02/11/2023   16:33:32  (  69.95, -72.13)    1.20                72
 02/14/2023   07:10:10   (  70.13,  68.73) 02/14/2023   07:11:03  (  70.14,  68.74)    1.52                53
 02/14/2023   08:00:52   ( -70.03,-123.80) 02/14/2023   08:00:33  ( -70.04,-123.78)    1.30                19