Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 1 28.  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)
 01/28/2024   07:34:33   ( -70.28,-118.01) 01/28/2024   07:35:44  ( -70.17,-117.35)   27.02                71
 01/28/2024   08:25:12   (  69.89,  49.90) 01/28/2024   08:25:14  (  69.91,  49.92)    3.00                 2
 01/28/2024   09:15:54   ( -69.81,-142.67) 01/28/2024   09:14:44  ( -69.80,-142.61)    2.95                70
 01/30/2024   23:51:20   ( -70.00,  -1.79) 01/30/2024   23:52:18  ( -69.99,  -1.75)    2.16                58
 01/31/2024   00:42:04   (  69.88, 165.70) 01/31/2024   00:41:45  (  69.89, 165.76)    2.66                19
 01/31/2024   01:32:34   ( -69.16, -25.95) 01/31/2024   01:31:25  ( -69.23, -27.50)   61.85                69
 02/02/2024   16:08:10   ( -69.94, 114.08) 02/02/2024   16:08:48  ( -69.93, 114.05)    1.68                38
 02/02/2024   16:58:54   (  69.82, -78.43) 02/02/2024   16:58:15  (  69.83, -78.45)    0.91                39
 02/05/2024   07:34:30   (  70.56,  61.58) 02/05/2024   07:35:39  (  70.50,  63.11)   57.00                69
 02/05/2024   08:25:01   ( -69.90,-130.07) 02/05/2024   08:25:18  ( -69.89,-130.13)    2.44                17
 02/05/2024   09:15:45   (  69.78,  37.42) 02/05/2024   09:14:45  (  69.79,  37.37)    1.96                60
 02/07/2024   23:51:11   (  70.00, 178.25) 02/07/2024   23:52:17  (  69.98, 178.24)    2.45                66
 02/08/2024   00:41:52   ( -69.86, -14.22) 02/08/2024   00:41:47  ( -69.87, -14.28)    2.27                 5
 02/08/2024   01:32:30   (  69.43, 153.72) 02/08/2024   01:31:19  (  69.49, 152.84)   34.73                71
 02/10/2024   16:08:02   (  69.98, -65.93) 02/10/2024   16:08:45  (  69.98, -65.88)    2.06                43
 02/10/2024   16:58:43   ( -69.84, 101.60) 02/10/2024   16:58:15  ( -69.87, 101.60)    3.55                28