Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 21.  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   ( -70.12, 132.87) 11/23/2025   14:54:36  ( -70.11, 132.86)    1.73                52
 11/23/2025   15:44:28   (  70.01, -59.64) 11/23/2025   15:44:03  (  70.00, -59.65)    0.46                25
 11/23/2025   16:34:54   ( -69.06, 109.04) 11/23/2025   16:33:47  ( -69.12, 106.80)   89.42                67
 11/26/2025   06:20:16   (  70.93,  80.01) 11/26/2025   06:21:23  (  70.87,  82.23)   81.31                67
 11/26/2025   07:10:44   ( -70.09,-111.33) 11/26/2025   07:11:05  ( -70.11,-111.27)    2.76                21
 11/26/2025   08:01:27   (  69.93,  56.22) 11/26/2025   08:00:33  (  69.94,  56.15)    3.24                54
 11/28/2025   22:37:00   (  70.13,-162.95) 11/28/2025   22:38:04  (  70.13,-162.99)    1.47                64
 11/28/2025   23:27:42   ( -70.02,   4.54) 11/28/2025   23:27:34  ( -70.02,   4.50)    1.75                 8
 11/29/2025   00:18:18   (  69.49, 172.63) 11/29/2025   00:17:08  (  69.53, 171.46)   45.82                70
 12/01/2025   14:53:59   (  70.06, -47.10) 12/01/2025   14:54:33  (  70.08, -47.17)    3.40                34
 12/01/2025   15:44:42   ( -70.00, 120.32) 12/01/2025   15:44:03  ( -69.98, 120.31)    2.55                39
 12/04/2025   06:20:20   ( -70.41, -99.19) 12/04/2025   06:21:32  ( -70.29, -98.64)   24.86                72
 12/04/2025   07:10:59   (  70.06,  68.67) 12/04/2025   07:11:01  (  70.06,  68.69)    0.75                 2
 12/04/2025   08:01:41   ( -69.94,-123.83) 12/04/2025   08:00:31  ( -69.96,-123.82)    2.69                70