Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 19.  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)
 06/20/2025   14:28:46   (  70.10, -40.88) 06/20/2025   14:29:12  (  70.08, -40.94)    3.19                26
 06/20/2025   15:19:27   ( -69.99, 126.61) 06/20/2025   15:18:41  ( -70.02, 126.61)    3.57                46
 06/23/2025   05:55:01   ( -70.42, -92.92) 06/23/2025   05:56:12  ( -70.32, -92.36)   23.96                71
 06/23/2025   06:45:41   (  70.07,  74.94) 06/23/2025   06:45:42  (  70.05,  74.90)    1.94                 1
 06/23/2025   07:36:22   ( -69.95,-117.57) 06/23/2025   07:35:12  ( -69.94,-117.62)    1.93                70
 06/25/2025   22:11:52   ( -70.13,  23.30) 06/25/2025   22:12:46  ( -70.12,  23.23)    2.76                54
 06/25/2025   23:02:37   (  70.04,-169.26) 06/25/2025   23:02:13  (  70.01,-169.28)    3.21                24
 06/25/2025   23:53:03   ( -69.12,  -0.61) 06/25/2025   23:51:56  ( -69.19,  -2.76)   85.41                67
 06/28/2025   14:28:48   ( -70.10, 139.11) 06/28/2025   14:29:16  ( -70.12, 139.11)    2.53                28
 06/28/2025   15:19:33   (  70.02, -53.46) 06/28/2025   15:18:43  (  70.01, -53.40)    2.37                50
 07/01/2025   05:55:04   (  70.26,  87.31) 07/01/2025   05:56:16  (  70.20,  87.48)    8.85                72
 07/01/2025   06:45:44   ( -70.07,-105.08) 07/01/2025   06:45:47  ( -70.05,-105.10)    2.70                 3
 07/01/2025   07:36:27   (  69.89,  62.50) 07/01/2025   07:35:14  (  69.93,  62.38)    6.51                73