Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 10.  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)
 11/12/2025   22:36:42   (  70.84,-163.98) 11/12/2025   22:37:50  (  70.76,-162.03)   71.63                68
 11/12/2025   23:27:11   ( -70.08,   4.56) 11/12/2025   23:27:30  ( -70.10,   4.63)    3.47                19
 11/13/2025   00:17:55   (  69.95, 172.07) 11/13/2025   00:16:58  (  69.94, 172.05)    1.11                57
 11/15/2025   14:53:30   (  70.15, -47.11) 11/15/2025   14:54:28  (  70.14, -47.06)    2.15                58
 11/15/2025   15:44:11   ( -70.01, 120.42) 11/15/2025   15:43:58  ( -70.03, 120.42)    2.51                13
 11/15/2025   16:34:44   (  69.30, -71.23) 11/15/2025   16:33:35  (  69.37, -72.84)   63.90                69
 11/18/2025   07:10:29   (  70.09,  68.72) 11/18/2025   07:10:54  (  70.09,  68.76)    1.56                25
 11/18/2025   08:01:11   ( -70.00,-123.82) 11/18/2025   08:00:24  ( -69.98,-123.76)    3.13                47
 11/20/2025   22:36:45   ( -70.16,  17.05) 11/20/2025   22:37:53  ( -70.17,  17.13)    2.96                68
 11/20/2025   23:27:29   (  70.05,-175.46) 11/20/2025   23:27:20  (  70.06,-175.39)    2.92                 9
 11/21/2025   00:18:06   ( -69.69,  -7.60) 11/21/2025   00:16:54  ( -69.73,  -8.21)   24.09                72
 11/23/2025   14:53:45   ( -70.12, 132.87) 11/23/2025   14:54:19  ( -70.11, 132.94)    2.96                34
 11/23/2025   15:44:28   (  69.97, -59.58) 11/23/2025   15:43:46  (  69.99, -59.59)    3.11                42