Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 1 1.  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)
 01/02/2025   05:30:33   (  71.08,  92.37) 01/02/2025   05:31:39  (  71.01,  94.82)   88.89                66
 01/02/2025   06:20:59   ( -70.14, -98.80) 01/02/2025   06:21:23  ( -70.13, -98.86)    2.66                24
 01/02/2025   07:11:43   (  70.04,  68.66) 01/02/2025   07:10:50  (  70.03,  68.64)    1.61                53
 01/04/2025   21:47:09   (  70.37,-150.68) 01/04/2025   21:48:20  (  70.33,-150.33)   13.67                71
 01/04/2025   22:37:48   ( -70.11,  17.04) 01/04/2025   22:37:52  ( -70.11,  16.99)    1.89                 4
 01/04/2025   23:28:32   (  70.01,-175.50) 01/04/2025   23:27:19  (  70.00,-175.52)    1.02                73
 01/07/2025   14:03:54   (  70.20, -34.62) 01/07/2025   14:04:49  (  70.18, -34.66)    2.66                55
 01/07/2025   14:54:36   ( -70.10, 132.84) 01/07/2025   14:54:18  ( -70.12, 132.90)    3.18                18
 01/07/2025   15:45:06   (  69.26, -58.61) 01/07/2025   15:43:58  (  69.30, -60.59)   78.17                68
 01/10/2025   06:20:42   (  70.16,  81.23) 01/10/2025   06:21:15  (  70.17,  81.23)    1.67                33
 01/10/2025   07:11:24   ( -70.06,-111.30) 01/10/2025   07:10:45  ( -70.07,-111.29)    0.57                39
 01/12/2025   21:46:56   ( -70.77,  28.75) 01/12/2025   21:48:06  ( -70.65,  30.18)   53.87                70
 01/12/2025   22:37:30   (  70.14,-162.95) 01/12/2025   22:37:40  (  70.15,-162.91)    1.82                10
 01/12/2025   23:28:12   ( -70.05,   4.52) 01/12/2025   23:27:10  ( -70.05,   4.57)    2.20                62