Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 12 30.  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  (  71.02,  94.83)   89.26                66
 01/02/2025   06:20:59   ( -70.14, -98.80) 01/02/2025   06:21:23  ( -70.14, -98.85)    1.96                24
 01/02/2025   07:11:43   (  70.04,  68.66) 01/02/2025   07:10:50  (  70.04,  68.65)    0.91                53
 01/04/2025   21:47:09   (  70.36,-150.67) 01/04/2025   21:48:21  (  70.31,-150.36)   13.04                72
 01/04/2025   22:37:49   ( -70.16,  16.96) 01/04/2025   22:37:52  ( -70.14,  17.03)    3.15                 3
 01/04/2025   23:28:32   (  70.01,-175.49) 01/04/2025   23:27:19  (  70.04,-175.47)    3.42                73
 01/07/2025   14:03:54   (  70.19, -34.60) 01/07/2025   14:04:50  (  70.20, -34.64)    1.71                56
 01/07/2025   14:54:36   ( -70.09, 132.86) 01/07/2025   14:54:20  ( -70.09, 132.84)    0.95                16
 01/07/2025   15:45:07   (  69.30, -58.67) 01/07/2025   15:43:59  (  69.31, -60.58)   75.03                68
 01/10/2025   06:20:43   (  70.19,  81.19) 01/10/2025   06:21:17  (  70.19,  81.24)    1.86                34
 01/10/2025   07:11:25   ( -70.09,-111.35) 01/10/2025   07:10:47  ( -70.08,-111.28)    2.64                38
 01/12/2025   21:46:59   ( -70.88,  28.56) 01/12/2025   21:48:07  ( -70.78,  30.37)   66.92                68
 01/12/2025   22:37:31   (  70.15,-162.97) 01/12/2025   22:37:44  (  70.12,-162.97)    3.63                13
 01/12/2025   23:28:12   ( -70.01,   4.57) 01/12/2025   23:27:14  ( -70.02,   4.52)    2.52                58