Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 14.  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)
 11/15/2025   14:53:29   (  70.12, -47.07) 11/15/2025   14:54:33  (  70.10, -47.14)    3.25                64
 11/15/2025   15:44:11   ( -70.04, 120.37) 11/15/2025   15:44:02  ( -70.05, 120.42)    1.96                 9
 11/15/2025   16:34:47   (  69.48, -71.49) 11/15/2025   16:33:36  (  69.56, -72.61)   44.51                71
 11/18/2025   07:10:29   (  70.08,  68.75) 11/18/2025   07:11:04  (  70.06,  68.68)    3.06                35
 11/18/2025   08:01:11   ( -69.99,-123.80) 11/18/2025   08:00:33  ( -70.01,-123.76)    2.86                38
 11/20/2025   22:36:50   ( -70.48,  16.56) 11/20/2025   22:38:01  ( -70.42,  17.43)   32.81                71
 11/20/2025   23:27:28   (  70.05,-175.45) 11/20/2025   23:27:33  (  70.03,-175.48)    1.98                 5
 11/21/2025   00:18:10   ( -69.95,  -7.99) 11/21/2025   00:17:03  ( -69.93,  -8.00)    2.59                67
 11/23/2025   14:53:44   ( -70.14, 132.85) 11/23/2025   14:54:35  ( -70.13, 132.89)    2.11                51
 11/23/2025   15:44:28   (  70.03, -59.68) 11/23/2025   15:44:02  (  70.01, -59.63)    2.68                26
 11/23/2025   16:34:54   ( -69.08, 109.02) 11/23/2025   16:33:47  ( -69.08, 106.75)   90.13                67
 11/26/2025   06:20:15   (  70.92,  80.03) 11/26/2025   06:21:22  (  70.82,  82.17)   79.01                67
 11/26/2025   07:10:43   ( -70.08,-111.30) 11/26/2025   07:11:04  ( -70.07,-111.31)    1.25                21
 11/26/2025   08:01:27   (  69.98,  56.16) 11/26/2025   08:00:31  (  69.95,  56.17)    2.84                56