Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 4.  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)
 11/04/2025   23:26:57   (  70.11,-175.43) 11/04/2025   23:27:32  (  70.10,-175.38)    1.88                35
 11/05/2025   00:17:38   ( -69.99,  -7.93) 11/05/2025   00:17:02  ( -69.99,  -7.91)    0.92                36
 11/07/2025   14:53:15   ( -70.87, 131.85) 11/07/2025   14:54:23  ( -70.79, 133.88)   74.52                68
 11/07/2025   15:43:46   (  70.06, -59.55) 11/07/2025   15:44:02  (  70.03, -59.60)    3.14                16
 11/07/2025   16:34:27   ( -69.93, 107.95) 11/07/2025   16:33:32  ( -69.92, 107.88)    2.89                55
 11/10/2025   07:09:51   ( -70.19,-111.27) 11/10/2025   07:11:02  ( -70.16,-111.17)    4.46                71
 11/10/2025   08:00:34   (  70.01,  56.31) 11/10/2025   08:00:30  (  70.00,  56.24)    3.18                 4
 11/10/2025   08:51:14   ( -69.83,-136.10) 11/10/2025   08:50:00  ( -69.89,-136.28)    9.57                74
 11/12/2025   23:26:39   ( -70.09,   4.68) 11/12/2025   23:27:31  ( -70.11,   4.63)    2.60                52
 11/13/2025   00:17:23   (  69.98, 172.16) 11/13/2025   00:16:58  (  70.00, 172.12)    2.64                25
 11/13/2025   01:07:49   ( -69.05, -19.17) 11/13/2025   01:06:42  ( -69.12, -21.43)   90.02                67
 11/15/2025   15:43:29   ( -70.11, 120.45) 11/15/2025   15:43:59  ( -70.09, 120.49)    2.57                30
 11/15/2025   16:34:12   (  69.95, -71.99) 11/15/2025   16:33:26  (  69.97, -72.03)    3.01                46
 11/18/2025   07:09:42   (  70.49,  68.33) 11/18/2025   07:10:53  (  70.36,  69.14)   33.20                71
 11/18/2025   08:00:17   ( -70.02,-123.62) 11/18/2025   08:00:27  ( -70.04,-123.69)    3.35                10
 11/18/2025   08:51:01   (  69.92,  43.84) 11/18/2025   08:49:54  (  69.92,  43.79)    1.94                67