Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 23.  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   22:11:53   (  71.04,-157.95) 01/24/2025   22:13:00  (  70.93,-155.61)   85.63                67
 01/24/2025   23:02:19   ( -70.14,  10.84) 01/24/2025   23:02:42  ( -70.16,  10.88)    3.29                23
 01/24/2025   23:53:03   (  70.01, 178.34) 01/24/2025   23:52:10  (  70.00, 178.29)    1.84                53
 01/27/2025   14:28:26   (  70.35, -41.02) 01/27/2025   14:29:37  (  70.31, -40.65)   14.52                71
 01/27/2025   15:19:04   ( -70.07, 126.73) 01/27/2025   15:19:09  ( -70.09, 126.67)    3.32                 5
 01/27/2025   16:09:49   (  70.00, -65.85) 01/27/2025   16:08:36  (  69.98, -65.84)    1.76                73
 01/30/2025   06:45:10   (  70.20,  75.02) 01/30/2025   06:46:05  (  70.19,  75.06)    2.12                55
 01/30/2025   07:35:51   ( -70.08,-117.48) 01/30/2025   07:35:35  ( -70.08,-117.46)    0.80                16
 01/30/2025   08:26:22   (  69.26,  51.03) 01/30/2025   08:25:14  (  69.31,  49.13)   74.91                68
 02/01/2025   23:01:56   (  70.17,-169.13) 02/01/2025   23:02:30  (  70.18,-169.06)    3.09                34
 02/01/2025   23:52:37   ( -70.05,  -1.63) 02/01/2025   23:52:00  ( -70.07,  -1.57)    3.35                37
 02/04/2025   14:28:10   ( -70.91, 138.18) 02/04/2025   14:29:18  ( -70.78, 140.09)   70.99                68
 02/04/2025   15:18:41   (  70.10, -53.23) 02/04/2025   15:18:55  (  70.11, -53.25)    1.45                14
 02/04/2025   16:09:23   ( -70.03, 114.20) 02/04/2025   16:08:25  ( -70.01, 114.24)    3.04                58