Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 12 22.  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)
 12/23/2024   22:12:48   (  70.12,-156.71) 12/23/2024   22:13:14  (  70.14,-156.78)    3.19                26
 12/23/2024   23:03:30   ( -70.01,  10.78) 12/23/2024   23:02:44  ( -70.03,  10.70)    3.21                46
 12/26/2024   13:39:01   ( -70.53, 151.14) 12/26/2024   13:40:13  ( -70.41, 151.85)   29.63                72
 12/26/2024   14:29:39   (  70.12, -40.92) 12/26/2024   14:29:43  (  70.14, -40.90)    2.14                 4
 12/26/2024   15:20:21   ( -70.01, 126.56) 12/26/2024   15:19:13  ( -70.03, 126.58)    2.04                68
 12/29/2024   05:55:46   ( -70.22, -92.60) 12/29/2024   05:56:45  ( -70.20, -92.57)    2.55                59
 12/29/2024   06:46:29   (  70.08,  74.93) 12/29/2024   06:46:12  (  70.09,  74.92)    1.52                17
 12/29/2024   07:37:01   ( -69.44,-116.81) 12/29/2024   07:35:51  ( -69.49,-118.27)   57.29                70
 12/31/2024   22:12:36   ( -70.19,  23.23) 12/31/2024   22:13:13  ( -70.17,  23.27)    3.29                37
 12/31/2024   23:03:19   (  70.05,-169.24) 12/31/2024   23:02:40  (  70.06,-169.24)    0.51                39
 01/03/2025   13:38:52   (  70.76, -29.21) 01/03/2025   13:40:01  (  70.69, -27.71)   55.75                69
 01/03/2025   14:29:24   ( -70.13, 139.12) 01/03/2025   14:29:39  ( -70.14, 139.13)    1.91                15
 01/03/2025   15:20:08   (  70.04, -53.44) 01/03/2025   15:19:06  (  70.03, -53.39)    2.05                62