Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 3 26.  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)
 03/27/2023   15:18:23   ( -70.11, 126.58) 03/27/2023   15:19:01  ( -70.09, 126.63)    3.14                38
 03/27/2023   16:09:07   (  70.00, -65.94) 03/27/2023   16:08:28  (  69.98, -65.88)    2.97                39
 03/30/2023   06:44:40   (  70.59,  74.30) 03/30/2023   06:45:50  (  70.51,  75.49)   44.91                70
 03/30/2023   07:35:14   ( -70.07,-117.58) 03/30/2023   07:35:26  ( -70.07,-117.51)    2.53                12
 03/30/2023   08:25:58   (  69.96,  49.90) 03/30/2023   08:24:53  (  69.96,  49.98)    3.07                65
 04/01/2023   23:01:21   (  70.09,-169.14) 04/01/2023   23:02:20  (  70.10,-169.20)    2.75                59
 04/01/2023   23:52:03   ( -70.00,  -1.68) 04/01/2023   23:51:50  ( -69.99,  -1.73)    1.89                13
 04/02/2023   00:42:36   (  69.30, 166.64) 04/02/2023   00:41:27  (  69.32, 165.01)   64.00                69
 04/04/2023   15:18:12   (  70.08, -53.35) 04/04/2023   15:18:43  (  70.08, -53.33)    0.73                31
 04/04/2023   16:08:54   ( -69.99, 114.11) 04/04/2023   16:08:13  ( -69.97, 114.15)    2.33                41
 04/07/2023   06:44:24   ( -70.46,-105.46) 04/07/2023   06:45:35  ( -70.34,-104.70)   31.08                71
 04/07/2023   07:35:02   (  70.04,  62.50) 04/07/2023   07:35:05  (  70.06,  62.54)    2.72                 3
 04/07/2023   08:25:44   ( -69.94,-130.03) 04/07/2023   08:24:35  ( -69.95,-129.97)    2.55                69