Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 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)
 10/25/2025   07:10:19   ( -70.09,-111.25) 10/25/2025   07:11:01  ( -70.08,-111.28)    1.69                42
 10/25/2025   08:01:04   (  70.00,  56.20) 10/25/2025   08:00:28  (  69.97,  56.22)    2.60                36
 10/27/2025   22:36:43   (  70.95,-164.17) 10/27/2025   22:37:49  (  70.85,-161.89)   83.58                66
 10/27/2025   23:27:09   ( -70.05,   4.60) 10/27/2025   23:27:32  ( -70.04,   4.53)    3.17                23
 10/28/2025   00:17:54   (  69.97, 172.03) 10/28/2025   00:16:58  (  69.98, 172.10)    3.14                56
 10/30/2025   14:53:19   (  70.20, -47.15) 10/30/2025   14:54:30  (  70.20, -46.98)    6.38                71
 10/30/2025   15:43:59   ( -70.03, 120.43) 10/30/2025   15:44:01  ( -70.04, 120.42)    1.34                 2
 10/30/2025   16:34:42   (  69.84, -71.98) 10/30/2025   16:33:29  (  69.87, -72.17)    7.97                73
 11/02/2025   07:10:07   (  70.14,  68.74) 11/02/2025   07:10:58  (  70.14,  68.82)    3.03                51
 11/02/2025   08:00:48   ( -70.01,-123.75) 11/02/2025   08:00:29  ( -69.98,-123.77)    3.18                19
 11/02/2025   08:51:16   (  69.03,  44.97) 11/02/2025   08:50:10  (  69.09,  42.67)   91.74                66
 11/04/2025   23:26:56   (  70.08,-175.38) 11/04/2025   23:27:26  (  70.08,-175.38)    0.51                30
 11/05/2025   00:17:37   ( -69.95,  -7.87) 11/05/2025   00:16:56  ( -69.98,  -7.89)    2.87                41