Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 30.  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)
 04/30/2024   14:27:49   (  70.98, -42.29) 04/30/2024   14:28:55  (  70.90, -39.82)   90.16                66
 04/30/2024   15:18:15   ( -70.05, 126.53) 04/30/2024   15:18:39  ( -70.02, 126.52)    3.11                24
 04/30/2024   16:08:59   (  69.94, -65.99) 04/30/2024   16:08:06  (  69.92, -65.98)    2.07                53
 05/03/2024   06:44:26   (  70.11,  74.90) 05/03/2024   06:45:37  (  70.12,  74.90)    0.83                71
 05/03/2024   07:35:08   ( -70.02,-117.65) 05/03/2024   07:35:07  ( -70.01,-117.62)    1.61                 1
 05/03/2024   08:25:49   (  69.75,  50.07) 05/03/2024   08:24:36  (  69.79,  49.72)   14.11                73
 05/05/2024   23:01:19   (  70.10,-169.30) 05/05/2024   23:02:05  (  70.07,-169.29)    3.59                46
 05/05/2024   23:52:00   ( -69.95,  -1.76) 05/05/2024   23:51:35  ( -69.96,  -1.81)    2.19                25
 05/08/2024   14:27:43   ( -71.04, 137.66) 05/08/2024   14:28:49  ( -70.96, 140.27)   95.01                66
 05/08/2024   15:18:10   (  70.04, -53.43) 05/08/2024   15:18:31  (  70.03, -53.46)    2.05                21
 05/08/2024   16:08:52   ( -69.95, 114.04) 05/08/2024   16:08:01  ( -69.92, 114.03)    2.68                51
 05/11/2024   06:44:18   ( -70.11,-105.04) 05/11/2024   06:45:30  ( -70.13,-105.08)    2.69                72
 05/11/2024   07:35:02   (  70.00,  62.43) 05/11/2024   07:34:57  (  70.01,  62.40)    1.40                 5
 05/11/2024   08:25:42   ( -69.80,-129.95) 05/11/2024   08:24:28  ( -69.85,-130.19)   10.80                74
 05/13/2024   23:01:10   ( -70.07,  10.79) 05/13/2024   23:01:56  ( -70.07,  10.73)    2.47                46
 05/13/2024   23:51:54   (  69.97, 178.26) 05/13/2024   23:51:23  (  69.95, 178.20)    3.10                31