Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 26.  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)
 11/26/2025   06:20:16   (  70.96,  79.96) 11/26/2025   06:21:23  (  70.83,  82.17)   81.53                67
 11/26/2025   07:10:43   ( -70.07,-111.30) 11/26/2025   07:11:05  ( -70.06,-111.34)    2.24                22
 11/26/2025   08:01:27   (  69.96,  56.18) 11/26/2025   08:00:32  (  69.95,  56.16)    0.93                55
 11/28/2025   22:37:01   (  70.16,-162.99) 11/28/2025   22:38:04  (  70.13,-162.99)    3.59                63
 11/28/2025   23:27:42   ( -70.00,   4.56) 11/28/2025   23:27:34  ( -70.01,   4.48)    3.44                 8
 11/29/2025   00:18:18   (  69.47, 172.66) 11/29/2025   00:17:08  (  69.52, 171.45)   47.56                70
 12/01/2025   14:54:00   (  70.10, -47.15) 12/01/2025   14:54:32  (  70.11, -47.13)    1.25                32
 12/01/2025   15:44:42   ( -69.99, 120.34) 12/01/2025   15:44:02  ( -70.00, 120.35)    1.47                40
 12/04/2025   06:20:18   ( -70.35, -99.10) 12/04/2025   06:21:30  ( -70.29, -98.63)   19.00                72
 12/04/2025   07:10:58   (  70.05,  68.68) 12/04/2025   07:10:59  (  70.07,  68.70)    1.82                 1
 12/04/2025   08:01:40   ( -69.93,-123.82) 12/04/2025   08:00:29  ( -69.96,-123.82)    3.12                71
 12/06/2025   22:37:13   ( -70.09,  17.06) 12/06/2025   22:38:00  ( -70.11,  17.00)    2.75                47
 12/06/2025   23:27:57   (  70.01,-175.50) 12/06/2025   23:27:27  (  70.00,-175.51)    1.40                30
 12/09/2025   14:03:40   (  70.71, -35.48) 12/09/2025   14:04:49  (  70.61, -34.00)   55.31                69
 12/09/2025   14:54:12   ( -70.05, 132.88) 12/09/2025   14:54:27  ( -70.07, 132.84)    2.49                15
 12/09/2025   15:44:56   (  69.97, -59.69) 12/09/2025   15:43:54  (  69.95, -59.68)    1.94                62