Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 23.  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)
 11/23/2025   14:53:44   ( -70.15, 132.84) 11/23/2025   14:54:35  ( -70.13, 132.89)    2.46                51
 11/23/2025   15:44:28   (  70.03, -59.67) 11/23/2025   15:44:02  (  70.03, -59.61)    2.53                26
 11/23/2025   16:34:54   ( -69.09, 109.01) 11/23/2025   16:33:47  ( -69.09, 106.76)   89.49                67
 11/26/2025   06:20:16   (  70.95,  79.97) 11/26/2025   06:21:23  (  70.84,  82.18)   81.62                67
 11/26/2025   07:10:43   ( -70.06,-111.29) 11/26/2025   07:11:05  ( -70.07,-111.32)    1.30                22
 11/26/2025   08:01:27   (  69.95,  56.19) 11/26/2025   08:00:32  (  69.96,  56.18)    1.35                55
 11/28/2025   22:37:01   (  70.15,-162.99) 11/28/2025   22:38:04  (  70.15,-162.96)    1.25                63
 11/28/2025   23:27:43   ( -70.04,   4.50) 11/28/2025   23:27:34  ( -70.04,   4.52)    1.09                 9
 11/29/2025   00:18:18   (  69.46, 172.67) 11/29/2025   00:17:08  (  69.54, 171.48)   47.14                70
 12/01/2025   14:54:00   (  70.09, -47.14) 12/01/2025   14:54:33  (  70.09, -47.16)    0.90                33
 12/01/2025   15:44:42   ( -69.98, 120.35) 12/01/2025   15:44:03  ( -69.98, 120.33)    1.02                39
 12/04/2025   06:20:19   ( -70.40, -99.17) 12/04/2025   06:21:31  ( -70.29, -98.63)   23.37                72
 12/04/2025   07:10:58   (  70.04,  68.69) 12/04/2025   07:11:00  (  70.06,  68.69)    2.19                 2
 12/04/2025   08:01:41   ( -69.97,-123.89) 12/04/2025   08:00:30  ( -69.96,-123.82)    3.02                71
 12/06/2025   22:37:14   ( -70.14,  16.99) 12/06/2025   22:38:01  ( -70.13,  17.03)    1.47                47
 12/06/2025   23:27:57   (  70.00,-175.49) 12/06/2025   23:27:28  (  70.02,-175.49)    1.67                29