Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 27.  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)
 01/27/2025   14:28:26   (  70.33, -40.98) 01/27/2025   14:29:38  (  70.28, -40.70)   11.78                72
 01/27/2025   15:19:05   ( -70.10, 126.68) 01/27/2025   15:19:09  ( -70.11, 126.69)    0.56                 4
 01/27/2025   16:09:49   (  69.97, -65.81) 01/27/2025   16:08:36  (  70.01, -65.81)    3.49                73
 01/30/2025   06:45:10   (  70.17,  75.06) 01/30/2025   06:46:06  (  70.16,  75.02)    1.93                56
 01/30/2025   07:35:51   ( -70.05,-117.44) 01/30/2025   07:35:36  ( -70.05,-117.51)    2.62                15
 01/30/2025   08:26:22   (  69.23,  51.07) 01/30/2025   08:25:14  (  69.33,  49.16)   75.91                68
 02/01/2025   23:01:55   (  70.13,-169.08) 02/01/2025   23:02:30  (  70.16,-169.09)    2.87                35
 02/01/2025   23:52:37   ( -70.07,  -1.66) 02/01/2025   23:52:00  ( -70.05,  -1.61)    2.95                37
 02/04/2025   14:28:10   ( -70.92, 138.16) 02/04/2025   14:29:18  ( -70.77, 140.07)   71.50                68
 02/04/2025   15:18:41   (  70.11, -53.24) 02/04/2025   15:18:55  (  70.11, -53.26)    0.71                14
 02/04/2025   16:09:22   ( -69.99, 114.26) 02/04/2025   16:08:25  ( -70.00, 114.22)    1.83                57
 02/07/2025   06:44:42   ( -70.17,-104.84) 02/07/2025   06:45:52  ( -70.18,-104.89)    2.49                70
 02/07/2025   07:35:27   (  70.10,  62.58) 02/07/2025   07:35:19  (  70.07,  62.59)    3.50                 8
 02/07/2025   08:26:04   ( -69.77,-129.60) 02/07/2025   08:24:51  ( -69.85,-130.09)   20.71                73
 02/09/2025   23:01:28   ( -70.17,  10.97) 02/09/2025   23:02:15  ( -70.15,  10.97)    2.34                47
 02/09/2025   23:52:12   (  70.05, 178.46) 02/09/2025   23:51:42  (  70.03, 178.44)    1.96                30