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   05:55:46   ( -70.22, -92.60) 12/29/2024   05:56:44  ( -70.23, -92.52)    3.16                58
 12/29/2024   06:46:29   (  70.07,  74.94) 12/29/2024   06:46:12  (  70.07,  74.90)    1.69                17
 12/29/2024   07:37:00   ( -69.39,-116.73) 12/29/2024   07:35:51  ( -69.47,-118.31)   62.17                69
 12/31/2024   22:12:34   ( -70.15,  23.30) 12/31/2024   22:13:11  ( -70.16,  23.27)    1.72                37
 12/31/2024   23:03:18   (  70.05,-169.25) 12/31/2024   23:02:38  (  70.05,-169.24)    0.31                40
 01/03/2025   13:38:51   (  70.73, -29.15) 01/03/2025   13:40:00  (  70.63, -27.78)   51.45                69
 01/03/2025   14:29:24   ( -70.15, 139.09) 01/03/2025   14:29:37  ( -70.14, 139.14)    2.05                13
 01/03/2025   15:20:07   (  70.00, -53.38) 01/03/2025   15:19:04  (  70.03, -53.38)    3.16                63
 01/06/2025   05:55:31   (  70.22,  87.45) 01/06/2025   05:56:32  (  70.23,  87.52)    2.83                61
 01/06/2025   06:46:13   ( -70.11,-105.07) 01/06/2025   06:46:02  ( -70.12,-105.00)    2.88                11
 01/06/2025   07:36:47   (  69.49,  63.17) 01/06/2025   07:35:37  (  69.56,  61.87)   50.96                70
 01/08/2025   22:12:19   (  70.14,-156.64) 01/08/2025   22:12:57  (  70.14,-156.69)    1.80                38
 01/08/2025   23:03:01   ( -70.04,  10.83) 01/08/2025   23:02:27  ( -70.04,  10.79)    1.41                34