Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 8.  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)
 05/08/2025   22:11:25   ( -70.73,  22.53) 05/08/2025   22:12:35  ( -70.62,  23.84)   49.92                70
 05/08/2025   23:02:00   (  70.14,-169.24) 05/08/2025   23:02:09  (  70.13,-169.22)    1.07                 9
 05/08/2025   23:52:42   ( -70.05,  -1.77) 05/08/2025   23:51:39  ( -70.02,  -1.75)    3.31                63
 05/11/2025   14:28:13   ( -70.19, 139.14) 05/11/2025   14:29:09  ( -70.21, 139.12)    2.39                56
 05/11/2025   15:18:57   (  70.07, -53.37) 05/11/2025   15:18:36  (  70.10, -53.38)    3.50                21
 05/11/2025   16:09:26   ( -69.29, 115.09) 05/11/2025   16:08:18  ( -69.33, 113.19)   74.78                68
 05/14/2025   05:54:45   (  71.16,  85.99) 05/14/2025   05:55:51  (  71.03,  88.61)   95.46                66
 05/14/2025   06:45:10   ( -70.18,-105.09) 05/14/2025   06:45:35  ( -70.15,-105.07)    2.95                25
 05/14/2025   07:35:54   (  70.06,  62.40) 05/14/2025   07:35:02  (  70.04,  62.42)    2.14                52
 05/16/2025   22:11:25   (  70.21,-156.70) 05/16/2025   22:12:31  (  70.23,-156.70)    1.99                66
 05/16/2025   23:02:07   ( -70.12,  10.76) 05/16/2025   23:02:01  ( -70.12,  10.78)    0.72                 6
 05/16/2025   23:52:45   (  69.69, 178.72) 05/16/2025   23:51:33  (  69.74, 177.88)   32.72                72
 05/19/2025   14:28:22   (  70.16, -40.87) 05/19/2025   14:28:57  (  70.17, -40.89)    1.38                35
 05/19/2025   15:19:04   ( -70.07, 126.59) 05/19/2025   15:18:27  ( -70.06, 126.59)    1.01                37