Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 6.  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)
 08/07/2025   14:29:00   (  70.11, -40.95) 08/07/2025   14:29:33  (  70.09, -40.92)    2.42                33
 08/07/2025   15:19:41   ( -69.99, 126.54) 08/07/2025   15:19:02  ( -69.98, 126.55)    1.59                39
 08/10/2025   05:55:20   ( -70.71, -93.44) 08/10/2025   05:56:29  ( -70.59, -91.96)   56.08                69
 08/10/2025   06:45:53   (  70.05,  74.91) 08/10/2025   06:46:04  (  70.05,  74.90)    0.87                11
 08/10/2025   07:36:35   ( -69.92,-117.59) 08/10/2025   07:35:34  ( -69.94,-117.62)    2.43                61
 08/12/2025   22:12:04   ( -70.12,  23.26) 08/12/2025   22:13:09  ( -70.10,  23.20)    2.72                65
 08/12/2025   23:02:47   (  69.99,-169.22) 08/12/2025   23:02:36  (  70.00,-169.30)    3.21                11
 08/12/2025   23:53:23   ( -69.54,  -1.25) 08/12/2025   23:52:12  ( -69.56,  -2.27)   39.50                71
 08/15/2025   14:28:59   ( -70.11, 139.04) 08/15/2025   14:29:40  ( -70.09, 139.07)    2.36                41
 08/15/2025   15:19:42   (  69.98, -53.45) 08/15/2025   15:19:07  (  69.98, -53.44)    0.15                35
 08/18/2025   05:55:23   (  70.82,  86.37) 08/18/2025   05:56:31  (  70.72,  88.23)   68.97                68
 08/18/2025   06:45:52   ( -70.06,-105.10) 08/18/2025   06:46:10  ( -70.07,-105.09)    0.99                18
 08/18/2025   07:36:35   (  69.93,  62.40) 08/18/2025   07:35:37  (  69.95,  62.39)    2.61                58