Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 1 3.  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)
 01/03/2025   13:38:51   (  70.71, -29.12) 01/03/2025   13:40:01  (  70.59, -27.85)   48.93                70
 01/03/2025   14:29:23   ( -70.14, 139.09) 01/03/2025   14:29:36  ( -70.14, 139.13)    1.43                13
 01/03/2025   15:20:07   (  70.04, -53.44) 01/03/2025   15:19:03  (  70.04, -53.37)    2.61                64
 01/06/2025   05:55:30   (  70.22,  87.45) 01/06/2025   05:56:31  (  70.22,  87.52)    2.52                61
 01/06/2025   06:46:12   ( -70.12,-105.09) 01/06/2025   06:46:01  ( -70.11,-105.01)    3.27                11
 01/06/2025   07:36:46   (  69.49,  63.16) 01/06/2025   07:35:36  (  69.56,  61.87)   50.94                70
 01/08/2025   22:12:18   (  70.17,-156.68) 01/08/2025   22:12:55  (  70.19,-156.63)    2.59                37
 01/08/2025   23:03:00   ( -70.08,  10.78) 01/08/2025   23:02:25  ( -70.07,  10.84)    2.34                35
 01/11/2025   13:38:34   ( -70.88, 150.68) 01/11/2025   13:39:42  ( -70.75, 152.47)   66.92                68
 01/11/2025   14:29:06   (  70.14, -40.85) 01/11/2025   14:29:18  (  70.15, -40.78)    2.63                12
 01/11/2025   15:19:47   ( -70.00, 126.69) 01/11/2025   15:18:49  ( -69.98, 126.62)    3.19                58
 01/14/2025   05:55:09   ( -70.19, -92.43) 01/14/2025   05:56:14  ( -70.17, -92.48)    2.65                65
 01/14/2025   06:45:52   (  70.09,  75.04) 01/14/2025   06:45:39  (  70.11,  75.08)    2.97                13
 01/14/2025   07:36:26   ( -69.57,-116.88) 01/14/2025   07:35:15  ( -69.67,-117.90)   40.97                71
 01/16/2025   22:11:55   ( -70.16,  23.42) 01/16/2025   22:12:34  ( -70.14,  23.38)    2.69                39
 01/16/2025   23:02:39   (  70.05,-169.11) 01/16/2025   23:02:00  (  70.07,-169.06)    2.70                39