Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 9 4.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 09/07/2025   06:20:26   (  70.09,  81.22) 09/07/2025   06:21:26  (  70.10,  81.14)    3.43                60
 09/07/2025   07:11:08   ( -69.99,-111.31) 09/07/2025   07:10:56  ( -69.99,-111.38)    2.80                12
 09/07/2025   08:01:41   (  69.30,  57.00) 09/07/2025   08:00:32  (  69.39,  55.44)   62.24                69
 09/09/2025   22:37:19   (  70.10,-163.02) 09/09/2025   22:37:54  (  70.09,-162.99)    1.14                35
 09/09/2025   23:28:01   ( -69.99,   4.45) 09/09/2025   23:27:24  ( -69.98,   4.49)    1.99                37
 09/12/2025   14:03:39   ( -70.74, 144.43) 09/12/2025   14:04:48  ( -70.59, 145.98)   59.63                69
 09/12/2025   14:54:12   (  70.06, -47.19) 09/12/2025   14:54:23  (  70.05, -47.17)    1.65                11
 09/12/2025   15:44:54   ( -69.96, 120.28) 09/12/2025   15:43:53  ( -69.94, 120.31)    2.73                61
 09/15/2025   06:20:21   ( -70.14, -98.84) 09/15/2025   06:21:24  ( -70.14, -98.80)    1.61                63
 09/15/2025   07:11:05   (  70.03,  68.63) 09/15/2025   07:10:51  (  70.02,  68.69)    2.47                14
 09/15/2025   08:01:39   ( -69.51,-123.28) 09/15/2025   08:00:28  ( -69.53,-124.36)   41.90                71
 09/17/2025   22:37:13   ( -70.07,  17.04) 09/17/2025   22:37:52  ( -70.08,  17.02)    1.55                39
 09/17/2025   23:27:57   (  69.96,-175.48) 09/17/2025   23:27:19  (  69.97,-175.50)    0.72                38