Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 4 25.  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)
 04/25/2025   14:27:59   ( -70.55, 138.66) 04/25/2025   14:29:10  ( -70.43, 139.46)   32.78                71
 04/25/2025   15:18:36   (  70.09, -53.30) 04/25/2025   15:18:41  (  70.11, -53.36)    2.98                 5
 04/25/2025   16:09:18   ( -69.98, 114.19) 04/25/2025   16:08:11  ( -69.99, 114.11)    3.41                67
 04/28/2025   06:44:51   ( -70.17,-104.99) 04/28/2025   06:45:39  ( -70.19,-104.99)    2.11                48
 04/28/2025   07:35:35   (  70.08,  62.47) 04/28/2025   07:35:06  (  70.09,  62.50)    1.68                29
 04/30/2025   22:11:17   (  70.76,-157.48) 04/30/2025   22:12:26  (  70.69,-156.00)   55.05                69
 04/30/2025   23:01:49   ( -70.12,  10.85) 04/30/2025   23:02:04  ( -70.14,  10.82)    1.93                15
 04/30/2025   23:52:33   (  70.02, 178.30) 04/30/2025   23:51:31  (  70.03, 178.31)    0.37                62
 05/03/2025   14:28:04   (  70.19, -40.82) 05/03/2025   14:28:57  (  70.20, -40.82)    1.46                53
 05/03/2025   15:18:46   ( -70.08, 126.67) 05/03/2025   15:18:27  ( -70.09, 126.66)    1.70                19
 05/03/2025   16:09:15   (  69.18, -64.71) 05/03/2025   16:08:08  (  69.20, -66.90)   86.45                67
 05/06/2025   05:54:34   ( -71.09, -93.84) 05/06/2025   05:55:40  ( -70.99, -91.38)   89.50                66
 05/06/2025   06:45:02   (  70.16,  74.99) 05/06/2025   06:45:20  (  70.17,  75.04)    2.66                18
 05/06/2025   07:35:44   ( -70.04,-117.53) 05/06/2025   07:34:50  ( -70.06,-117.48)    2.61                54
 05/08/2025   22:11:16   ( -70.23,  23.32) 05/08/2025   22:12:16  ( -70.22,  23.36)    2.32                60
 05/08/2025   23:01:59   (  70.08,-169.14) 05/08/2025   23:01:43  (  70.10,-169.16)    2.36                16
 05/08/2025   23:52:31   ( -69.44,  -0.88) 05/08/2025   23:51:22  ( -69.50,  -2.36)   58.05                69