Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 2 22.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 02/23/2023   15:18:42   ( -70.12, 126.58) 02/23/2023   15:19:17  ( -70.11, 126.66)    3.02                35
 02/23/2023   16:09:25   (  69.95, -65.85) 02/23/2023   16:08:45  (  69.95, -65.92)    2.71                40
 02/26/2023   06:44:58   (  70.40,  74.58) 02/26/2023   06:46:09  (  70.29,  75.18)   25.59                71
 02/26/2023   07:35:35   ( -70.05,-117.55) 02/26/2023   07:35:41  ( -70.06,-117.51)    2.09                 6
 02/26/2023   08:26:19   (  69.93,  49.93) 02/26/2023   08:25:08  (  69.95,  49.98)    2.94                71
 02/28/2023   23:01:47   (  70.08,-169.15) 02/28/2023   23:02:36  (  70.09,-169.20)    2.41                49
 02/28/2023   23:52:29   ( -69.99,  -1.69) 02/28/2023   23:52:06  ( -69.98,  -1.73)    1.43                23
 03/03/2023   14:28:13   ( -70.98, 137.87) 03/03/2023   14:29:20  ( -70.86, 140.18)   85.11                67
 03/03/2023   15:18:41   (  70.03, -53.31) 03/03/2023   15:19:00  (  70.03, -53.39)    2.76                19
 03/03/2023   16:09:23   ( -69.93, 114.15) 03/03/2023   16:08:30  ( -69.92, 114.09)    2.49                53
 03/06/2023   06:44:51   ( -70.10,-104.96) 03/06/2023   06:45:56  ( -70.11,-105.02)    2.80                65
 03/06/2023   07:35:35   (  69.99,  62.51) 03/06/2023   07:35:23  (  69.99,  62.46)    1.79                12
 03/06/2023   08:26:10   ( -69.52,-129.48) 03/06/2023   08:24:59  ( -69.56,-130.50)   40.16                71