Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 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)
 06/23/2025   05:55:01   ( -70.41, -92.90) 06/23/2025   05:56:12  ( -70.34, -92.33)   22.60                71
 06/23/2025   06:45:41   (  70.05,  74.96) 06/23/2025   06:45:42  (  70.07,  74.93)    2.99                 1
 06/23/2025   07:36:22   ( -69.94,-117.55) 06/23/2025   07:35:12  ( -69.96,-117.59)    3.13                70
 06/25/2025   22:11:53   ( -70.16,  23.25) 06/25/2025   22:12:46  ( -70.14,  23.26)    2.51                53
 06/25/2025   23:02:37   (  70.02,-169.23) 06/25/2025   23:02:13  (  70.04,-169.24)    1.92                24
 06/25/2025   23:53:04   ( -69.16,  -0.66) 06/25/2025   23:51:56  ( -69.21,  -2.73)   82.07                68
 06/28/2025   14:28:47   ( -70.08, 139.14) 06/28/2025   14:29:16  ( -70.09, 139.08)    3.01                29
 06/28/2025   15:19:32   (  69.99, -53.42) 06/28/2025   15:18:43  (  69.98, -53.43)    1.13                49
 07/01/2025   05:55:04   (  70.28,  87.27) 07/01/2025   05:56:15  (  70.24,  87.54)   11.12                71
 07/01/2025   06:45:44   ( -70.10,-105.13) 07/01/2025   06:45:46  ( -70.09,-105.05)    3.41                 2
 07/01/2025   07:36:27   (  69.92,  62.46) 07/01/2025   07:35:14  (  69.92,  62.35)    3.89                73
 07/03/2025   22:11:58   (  70.16,-156.77) 07/03/2025   22:12:46  (  70.16,-156.69)    2.94                48
 07/03/2025   23:02:39   ( -70.02,  10.76) 07/03/2025   23:02:17  ( -70.01,  10.72)    2.09                22