Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 30.  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)
 05/30/2025   05:54:46   (  70.39,  87.19) 05/30/2025   05:55:57  (  70.35,  87.57)   14.86                71
 05/30/2025   06:45:24   ( -70.12,-105.06) 05/30/2025   06:45:29  ( -70.11,-105.13)    2.69                 5
 05/30/2025   07:36:09   (  70.02,  62.39) 05/30/2025   07:34:56  (  70.02,  62.38)    0.65                73
 06/01/2025   22:11:40   (  70.21,-156.76) 06/01/2025   22:12:27  (  70.19,-156.78)    2.05                47
 06/01/2025   23:02:21   ( -70.09,  10.74) 06/01/2025   23:01:57  ( -70.07,  10.69)    2.90                24
 06/04/2025   13:38:07   ( -71.06, 150.30) 06/04/2025   13:39:14  ( -70.99, 152.66)   85.49                67
 06/04/2025   14:28:37   (  70.19, -40.97) 06/04/2025   14:28:54  (  70.18, -40.91)    2.73                17
 06/04/2025   15:19:18   ( -70.07, 126.53) 06/04/2025   15:18:24  ( -70.06, 126.56)    1.71                54
 06/07/2025   05:54:49   ( -70.27, -92.64) 06/07/2025   05:55:54  ( -70.25, -92.57)    3.33                65
 06/07/2025   06:45:33   (  70.13,  74.89) 06/07/2025   06:45:21  (  70.14,  74.93)    2.54                12
 06/07/2025   07:36:08   ( -69.69,-117.14) 06/07/2025   07:34:56  ( -69.76,-117.98)   33.28                72
 06/09/2025   22:11:44   ( -70.21,  23.22) 06/09/2025   22:12:20  ( -70.20,  23.25)    1.50                36
 06/09/2025   23:02:28   (  70.07,-169.26) 06/09/2025   23:01:47  (  70.09,-169.26)    2.43                41
 06/12/2025   13:38:03   (  70.49, -28.78) 06/12/2025   13:39:14  (  70.40, -28.21)   23.47                71
 06/12/2025   14:28:40   ( -70.16, 139.06) 06/12/2025   14:28:47  ( -70.13, 139.03)    3.17                 7
 06/12/2025   15:19:24   (  70.02, -53.42) 06/12/2025   15:18:14  (  70.01, -53.48)    2.38                70