Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 9 8.  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)
 09/09/2025   22:37:20   (  70.10,-163.02) 09/09/2025   22:37:55  (  70.10,-162.98)    1.44                35
 09/09/2025   23:28:01   ( -70.00,   4.45) 09/09/2025   23:27:24  ( -69.98,   4.49)    2.34                37
 09/12/2025   14:03:39   ( -70.74, 144.43) 09/12/2025   14:04:48  ( -70.61, 146.01)   59.95                69
 09/12/2025   14:54:12   (  70.06, -47.18) 09/12/2025   14:54:23  (  70.07, -47.14)    2.51                11
 09/12/2025   15:44:54   ( -69.96, 120.28) 09/12/2025   15:43:53  ( -69.96, 120.34)    2.29                61
 09/15/2025   06:20:21   ( -70.13, -98.83) 09/15/2025   06:21:25  ( -70.13, -98.81)    0.63                64
 09/15/2025   07:11:05   (  70.02,  68.65) 09/15/2025   07:10:52  (  70.02,  68.68)    1.14                13
 09/15/2025   08:01:39   ( -69.51,-123.27) 09/15/2025   08:00:28  ( -69.58,-124.29)   40.77                71
 09/17/2025   22:37:14   ( -70.11,  16.99) 09/17/2025   22:37:53  ( -70.11,  17.05)    2.34                39
 09/17/2025   23:27:58   (  69.99,-175.53) 09/17/2025   23:27:20  (  70.00,-175.46)    2.68                38
 09/20/2025   14:03:35   (  70.70, -35.50) 09/20/2025   14:04:44  (  70.56, -34.04)   56.12                69
 09/20/2025   14:54:06   ( -70.03, 132.88) 09/20/2025   14:54:21  ( -70.07, 132.88)    3.69                15
 09/20/2025   15:44:49   (  69.92, -59.64) 09/20/2025   15:43:47  (  69.95, -59.64)    3.47                62