Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 12 21.  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)
 12/21/2024   05:55:58   (  70.17,  87.44) 12/21/2024   05:56:44  (  70.17,  87.39)    1.97                46
 12/21/2024   06:46:40   ( -70.06,-105.07) 12/21/2024   06:46:14  ( -70.06,-105.13)    2.29                26
 12/23/2024   22:12:49   (  70.15,-156.75) 12/23/2024   22:13:14  (  70.17,-156.73)    2.69                25
 12/23/2024   23:03:31   ( -70.04,  10.73) 12/23/2024   23:02:44  ( -70.06,  10.75)    2.42                47
 12/26/2024   13:39:02   ( -70.55, 151.09) 12/26/2024   13:40:13  ( -70.46, 151.92)   32.53                71
 12/26/2024   14:29:40   (  70.15, -40.96) 12/26/2024   14:29:44  (  70.13, -40.91)    2.77                 4
 12/26/2024   15:20:22   ( -70.04, 126.52) 12/26/2024   15:19:14  ( -70.02, 126.57)    2.55                68
 12/29/2024   05:55:45   ( -70.20, -92.56) 12/29/2024   05:56:45  ( -70.21, -92.55)    1.94                60
 12/29/2024   06:46:29   (  70.11,  74.89) 12/29/2024   06:46:12  (  70.10,  74.93)    1.87                17
 12/29/2024   07:37:01   ( -69.47,-116.85) 12/29/2024   07:35:51  ( -69.50,-118.26)   55.15                70
 12/31/2024   22:12:35   ( -70.17,  23.27) 12/31/2024   22:13:14  ( -70.14,  23.23)    3.06                39
 12/31/2024   23:03:19   (  70.08,-169.28) 12/31/2024   23:02:40  (  70.08,-169.21)    3.00                39
 01/03/2025   13:38:54   (  70.84, -29.33) 01/03/2025   13:40:02  (  70.73, -27.64)   63.14                68
 01/03/2025   14:29:25   ( -70.15, 139.08) 01/03/2025   14:29:41  ( -70.14, 139.11)    2.12                16
 01/03/2025   15:20:08   (  70.01, -53.39) 01/03/2025   15:19:08  (  70.02, -53.41)    1.18                60