Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 30.  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)
 01/30/2025   06:45:09   (  70.16,  75.07) 01/30/2025   06:46:05  (  70.17,  75.03)    1.78                56
 01/30/2025   07:35:50   ( -70.05,-117.43) 01/30/2025   07:35:35  ( -70.05,-117.51)    2.71                15
 01/30/2025   08:26:22   (  69.28,  51.00) 01/30/2025   08:25:14  (  69.28,  49.09)   75.17                68
 02/01/2025   23:01:56   (  70.18,-169.15) 02/01/2025   23:02:30  (  70.17,-169.08)    3.03                34
 02/01/2025   23:52:37   ( -70.06,  -1.65) 02/01/2025   23:52:00  ( -70.05,  -1.61)    2.29                37
 02/04/2025   14:28:10   ( -70.91, 138.17) 02/04/2025   14:29:18  ( -70.78, 140.08)   71.34                68
 02/04/2025   15:18:41   (  70.10, -53.23) 02/04/2025   15:18:55  (  70.12, -53.24)    2.35                14
 02/04/2025   16:09:22   ( -69.99, 114.27) 02/04/2025   16:08:25  ( -70.01, 114.23)    2.89                57
 02/07/2025   06:44:43   ( -70.22,-104.91) 02/07/2025   06:45:52  ( -70.20,-104.87)    2.54                69
 02/07/2025   07:35:27   (  70.09,  62.59) 02/07/2025   07:35:19  (  70.09,  62.61)    0.80                 8
 02/07/2025   08:26:04   ( -69.76,-129.60) 02/07/2025   08:24:52  ( -69.81,-130.14)   21.66                72
 02/09/2025   23:01:27   ( -70.17,  10.97) 02/09/2025   23:02:14  ( -70.18,  11.00)    1.93                47
 02/09/2025   23:52:11   (  70.04, 178.48) 02/09/2025   23:51:41  (  70.07, 178.49)    2.89                30
 02/12/2025   14:27:47   (  71.09, -42.03) 02/12/2025   14:28:53  (  70.99, -39.51)   91.74                66
 02/12/2025   15:18:12   ( -70.13, 126.84) 02/12/2025   15:18:37  ( -70.12, 126.82)    1.47                25
 02/12/2025   16:08:56   (  70.00, -65.66) 02/12/2025   16:08:04  (  70.00, -65.70)    1.58                52