Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 5 11.  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)
 05/11/2024   06:44:24   ( -70.39,-105.49) 05/11/2024   06:45:36  ( -70.28,-104.90)   25.54                72
 05/11/2024   07:35:03   (  70.01,  62.41) 05/11/2024   07:35:06  (  70.01,  62.37)    1.53                 3
 05/11/2024   08:25:45   ( -69.93,-130.15) 05/11/2024   08:24:36  ( -69.90,-130.16)    3.21                69
 05/13/2024   23:01:10   ( -70.10,  10.75) 05/13/2024   23:02:05  ( -70.10,  10.73)    0.89                55
 05/13/2024   23:51:54   (  69.98, 178.24) 05/13/2024   23:51:32  (  69.99, 178.22)    1.11                22
 05/14/2024   00:42:22   ( -69.16, -13.24) 05/14/2024   00:41:14  ( -69.22, -15.19)   77.37                68
 05/16/2024   15:18:02   ( -70.09, 126.56) 05/16/2024   15:18:31  ( -70.06, 126.56)    2.98                29
 05/16/2024   16:08:46   (  69.97, -65.96) 05/16/2024   16:07:58  (  69.95, -65.95)    2.77                48
 05/19/2024   06:44:13   (  70.23,  74.81) 05/19/2024   06:45:24  (  70.22,  75.05)    9.33                71
 05/19/2024   07:34:53   ( -70.04,-117.58) 05/19/2024   07:34:55  ( -70.05,-117.55)    1.92                 2
 05/19/2024   08:25:36   (  69.87,  49.98) 05/19/2024   08:24:23  (  69.88,  49.85)    4.94                73
 05/21/2024   23:01:02   (  70.10,-169.20) 05/21/2024   23:01:49  (  70.08,-169.25)    3.23                47
 05/21/2024   23:51:44   ( -70.01,  -1.74) 05/21/2024   23:51:18  ( -70.03,  -1.69)    2.69                26
 05/24/2024   14:27:23   ( -70.98, 137.87) 05/24/2024   14:28:30  ( -70.86, 140.16)   84.62                67
 05/24/2024   15:17:52   (  70.09, -53.39) 05/24/2024   15:18:09  (  70.08, -53.34)    2.15                17
 05/24/2024   16:08:33   ( -69.95, 114.15) 05/24/2024   16:07:39  ( -69.98, 114.15)    3.42                54