Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 12 20.  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)
 12/22/2024   14:04:24   (  70.16, -34.65) 12/22/2024   14:04:52  (  70.16, -34.68)    1.46                28
 12/22/2024   14:55:06   ( -70.05, 132.84) 12/22/2024   14:54:22  ( -70.05, 132.79)    1.71                44
 12/25/2024   05:30:38   ( -70.65, -86.96) 12/25/2024   05:31:49  ( -70.54, -85.91)   41.08                71
 12/25/2024   06:21:14   (  70.15,  81.15) 12/25/2024   06:21:21  (  70.16,  81.19)    1.88                 7
 12/25/2024   07:11:56   ( -70.03,-111.36) 12/25/2024   07:10:51  ( -70.05,-111.33)    2.13                65
 12/27/2024   21:47:21   ( -70.23,  29.49) 12/27/2024   21:48:24  ( -70.23,  29.53)    1.49                63
 12/27/2024   22:38:04   (  70.09,-162.98) 12/27/2024   22:37:51  (  70.12,-162.98)    3.48                13
 12/27/2024   23:28:39   ( -69.61,   5.05) 12/27/2024   23:27:28  ( -69.64,   3.97)   41.95                71
 12/30/2024   14:04:11   ( -70.19, 145.34) 12/30/2024   14:04:54  ( -70.18, 145.32)    1.99                43
 12/30/2024   14:54:54   (  70.05, -47.14) 12/30/2024   14:54:21  (  70.06, -47.19)    2.28                33
 01/02/2025   05:30:34   (  71.06,  92.40) 01/02/2025   05:31:40  (  70.95,  94.74)   85.63                66
 01/02/2025   06:21:01   ( -70.16, -98.84) 01/02/2025   06:21:23  ( -70.14, -98.84)    2.46                22
 01/02/2025   07:11:44   (  70.02,  68.69) 01/02/2025   07:10:50  (  70.03,  68.64)    1.86                54