Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 1 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)
 01/23/2025   14:03:27   (  70.94, -35.68) 01/23/2025   14:04:35  (  70.82, -33.71)   72.87                68
 01/23/2025   14:53:55   ( -70.14, 132.93) 01/23/2025   14:54:15  ( -70.16, 132.93)    1.82                20
 01/23/2025   15:44:39   (  70.01, -59.57) 01/23/2025   15:43:43  (  70.00, -59.64)    3.13                56
 01/26/2025   06:20:01   (  70.24,  81.25) 01/26/2025   06:21:11  (  70.23,  81.29)    2.51                70
 01/26/2025   07:10:42   ( -70.12,-111.24) 01/26/2025   07:10:41  ( -70.11,-111.24)    1.46                 1
 01/26/2025   08:01:23   (  69.84,  56.49) 01/26/2025   08:00:10  (  69.89,  56.10)   16.35                73
 01/28/2025   22:36:47   (  70.19,-162.87) 01/28/2025   22:37:36  (  70.18,-162.87)    0.82                49
 01/28/2025   23:27:28   ( -70.07,   4.64) 01/28/2025   23:27:06  ( -70.07,   4.60)    1.58                22
 01/31/2025   14:53:32   (  70.15, -47.00) 01/31/2025   14:53:59  (  70.14, -47.03)    1.13                27
 01/31/2025   15:44:13   ( -70.03, 120.50) 01/31/2025   15:43:29  ( -70.03, 120.45)    1.97                44
 02/03/2025   06:19:40   ( -70.57, -99.16) 02/03/2025   06:20:51  ( -70.44, -98.33)   33.81                71
 02/03/2025   07:10:18   (  70.13,  68.83) 02/03/2025   07:10:22  (  70.11,  68.83)    1.98                 4
 02/03/2025   08:00:59   ( -70.01,-123.66) 02/03/2025   07:59:52  ( -70.00,-123.69)    1.16                67
 02/05/2025   22:36:19   ( -70.19,  17.23) 02/05/2025   22:37:17  ( -70.20,  17.23)    1.10                58
 02/05/2025   23:27:03   (  70.07,-175.27) 02/05/2025   23:26:44  (  70.08,-175.29)    1.76                19