Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 12 27.  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)
 12/29/2024   05:55:45   ( -70.20, -92.57) 12/29/2024   05:56:44  ( -70.20, -92.57)    0.46                59
 12/29/2024   06:46:29   (  70.10,  74.89) 12/29/2024   06:46:11  (  70.09,  74.93)    1.85                18
 12/29/2024   07:37:00   ( -69.42,-116.78) 12/29/2024   07:35:50  ( -69.49,-118.28)   58.91                70
 12/31/2024   22:12:35   ( -70.18,  23.24) 12/31/2024   22:13:11  ( -70.18,  23.30)    2.06                36
 12/31/2024   23:03:18   (  70.03,-169.22) 12/31/2024   23:02:39  (  70.02,-169.29)    3.01                39
 01/03/2025   13:38:51   (  70.71, -29.11) 01/03/2025   13:40:01  (  70.61, -27.82)   48.90                70
 01/03/2025   14:29:24   ( -70.13, 139.11) 01/03/2025   14:29:38  ( -70.11, 139.09)    2.05                14
 01/03/2025   15:20:07   (  69.98, -53.35) 01/03/2025   15:19:05  (  70.00, -53.42)    3.58                62
 01/06/2025   05:55:30   (  70.19,  87.49) 01/06/2025   05:56:32  (  70.20,  87.48)    0.84                62
 01/06/2025   06:46:12   ( -70.09,-105.04) 01/06/2025   06:46:02  ( -70.09,-105.04)    0.24                10
 01/06/2025   07:36:47   (  69.52,  63.12) 01/06/2025   07:35:37  (  69.54,  61.84)   49.95                70
 01/08/2025   22:12:19   (  70.17,-156.69) 01/08/2025   22:12:56  (  70.18,-156.64)    1.81                37
 01/08/2025   23:03:01   ( -70.07,  10.78) 01/08/2025   23:02:26  ( -70.07,  10.84)    2.11                35