Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 22.  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)
 01/22/2025   06:45:32   ( -70.17,-105.02) 01/22/2025   06:46:14  ( -70.16,-105.00)    1.29                42
 01/22/2025   07:36:16   (  70.05,  62.48) 01/22/2025   07:35:41  (  70.06,  62.49)    1.69                35
 01/24/2025   22:11:53   (  71.06,-157.97) 01/24/2025   22:12:59  (  70.97,-155.55)   88.10                66
 01/24/2025   23:02:19   ( -70.15,  10.81) 01/24/2025   23:02:42  ( -70.15,  10.85)    1.49                23
 01/24/2025   23:53:03   (  70.02, 178.32) 01/24/2025   23:52:09  (  70.04, 178.35)    2.20                54
 01/27/2025   14:28:27   (  70.37, -41.04) 01/27/2025   14:29:38  (  70.29, -40.68)   15.84                71
 01/27/2025   15:19:05   ( -70.09, 126.71) 01/27/2025   15:19:10  ( -70.07, 126.64)    3.23                 5
 01/27/2025   16:09:49   (  69.96, -65.79) 01/27/2025   16:08:37  (  69.96, -65.87)    3.20                72
 01/30/2025   06:45:09   (  70.16,  75.08) 01/30/2025   06:46:05  (  70.16,  75.02)    2.16                56
 01/30/2025   07:35:51   ( -70.09,-117.50) 01/30/2025   07:35:34  ( -70.11,-117.42)    3.35                17
 01/30/2025   08:26:21   (  69.22,  51.08) 01/30/2025   08:25:14  (  69.27,  49.09)   78.84                67
 02/01/2025   23:01:55   (  70.13,-169.07) 02/01/2025   23:02:30  (  70.14,-169.11)    1.67                35
 02/01/2025   23:52:37   ( -70.06,  -1.65) 02/01/2025   23:52:00  ( -70.03,  -1.63)    3.33                37
 02/04/2025   14:28:09   ( -70.87, 138.25) 02/04/2025   14:29:17  ( -70.78, 140.09)   68.11                68
 02/04/2025   15:18:41   (  70.12, -53.25) 02/04/2025   15:18:54  (  70.12, -53.24)    0.24                13
 02/04/2025   16:09:22   ( -69.99, 114.26) 02/04/2025   16:08:24  ( -70.01, 114.24)    2.10                58