Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 1 26.  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)
 01/26/2025   06:20:04   (  70.41,  80.99) 01/26/2025   06:21:15  (  70.34,  81.43)   18.13                71
 01/26/2025   07:10:42   ( -70.13,-111.26) 01/26/2025   07:10:47  ( -70.12,-111.25)    1.59                 5
 01/26/2025   08:01:26   (  70.00,  56.24) 01/26/2025   08:00:14  (  70.02,  56.25)    1.90                72
 01/28/2025   22:36:47   (  70.19,-162.87) 01/28/2025   22:37:49  (  70.19,-162.92)    1.68                62
 01/28/2025   23:27:28   ( -70.07,   4.63) 01/28/2025   23:27:19  ( -70.08,   4.56)    2.61                 9
 01/29/2025   00:18:04   (  69.52, 172.76) 01/29/2025   00:16:54  (  69.54, 171.45)   50.83                70
 01/31/2025   14:53:33   (  70.20, -47.08) 01/31/2025   14:54:18  (  70.22, -47.01)    3.29                45
 01/31/2025   15:44:14   ( -70.08, 120.42) 01/31/2025   15:43:49  ( -70.05, 120.39)    3.24                25
 02/03/2025   07:10:19   (  70.17,  68.77) 02/03/2025   07:10:49  (  70.14,  68.76)    3.16                30
 02/03/2025   08:01:00   ( -70.05,-123.73) 02/03/2025   08:00:19  ( -70.04,-123.75)    1.69                41
 02/05/2025   22:36:33   ( -70.91,  16.08) 02/05/2025   22:37:41  ( -70.79,  17.95)   69.40                68
 02/05/2025   23:27:05   (  70.15,-175.40) 02/05/2025   23:27:18  (  70.13,-175.37)    2.43                13
 02/06/2025   00:17:46   ( -70.03,  -7.90) 02/06/2025   00:16:48  ( -70.03,  -7.89)    0.57                58
 02/08/2025   14:53:07   ( -70.27, 132.91) 02/08/2025   14:54:19  ( -70.25, 133.03)    5.10                72
 02/08/2025   15:43:50   (  70.09, -59.51) 02/08/2025   15:43:47  (  70.08, -59.57)    2.88                 3
 02/08/2025   16:34:30   ( -69.92, 108.07) 02/08/2025   16:33:17  ( -69.98, 107.92)    8.64                73