Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 24.  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)
 01/24/2025   22:11:52   (  71.03,-157.93) 01/24/2025   22:12:59  (  70.94,-155.59)   85.13                67
 01/24/2025   23:02:18   ( -70.12,  10.85) 01/24/2025   23:02:42  ( -70.12,  10.81)    1.72                24
 01/24/2025   23:53:02   (  69.99, 178.36) 01/24/2025   23:52:09  (  70.01, 178.31)    2.70                53
 01/27/2025   14:28:26   (  70.34, -41.00) 01/27/2025   14:29:38  (  70.27, -40.72)   13.24                72
 01/27/2025   15:19:05   ( -70.11, 126.67) 01/27/2025   15:19:09  ( -70.10, 126.68)    1.63                 4
 01/27/2025   16:09:49   (  69.99, -65.83) 01/27/2025   16:08:36  (  69.99, -65.83)    0.86                73
 01/30/2025   06:45:10   (  70.19,  75.04) 01/30/2025   06:46:05  (  70.20,  75.07)    1.76                55
 01/30/2025   07:35:51   ( -70.07,-117.46) 01/30/2025   07:35:35  ( -70.09,-117.45)    2.07                16
 01/30/2025   08:26:22   (  69.25,  51.05) 01/30/2025   08:25:14  (  69.31,  49.14)   75.45                68
 02/01/2025   23:01:56   (  70.16,-169.11) 02/01/2025   23:02:31  (  70.13,-169.13)    3.30                35
 02/01/2025   23:52:37   ( -70.04,  -1.61) 02/01/2025   23:52:01  ( -70.02,  -1.65)    2.44                36
 02/04/2025   14:28:09   ( -70.90, 138.20) 02/04/2025   14:29:17  ( -70.78, 140.09)   70.12                68
 02/04/2025   15:18:40   (  70.09, -53.21) 02/04/2025   15:18:54  (  70.12, -53.24)    3.19                14
 02/04/2025   16:09:22   ( -70.02, 114.21) 02/04/2025   16:08:24  ( -70.01, 114.24)    1.76                58
 02/07/2025   06:44:42   ( -70.22,-104.90) 02/07/2025   06:45:50  ( -70.22,-104.83)    2.92                68
 02/07/2025   07:35:26   (  70.09,  62.60) 02/07/2025   07:35:17  (  70.11,  62.65)    2.47                 9
 02/07/2025   08:26:03   ( -69.76,-129.59) 02/07/2025   08:24:50  ( -69.84,-130.10)   21.47                73