Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 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)
 03/23/2025   06:20:07   ( -70.20, -98.80) 03/23/2025   06:21:00  ( -70.18, -98.83)    2.26                53
 03/23/2025   07:10:51   (  70.09,  68.67) 03/23/2025   07:10:27  (  70.07,  68.66)    1.76                24
 03/23/2025   08:01:18   ( -69.20,-122.71) 03/23/2025   08:00:10  ( -69.25,-124.83)   83.85                68
 03/25/2025   22:36:58   ( -70.14,  17.06) 03/25/2025   22:37:28  ( -70.14,  16.99)    2.86                30
 03/25/2025   23:27:42   (  70.04,-175.48) 03/25/2025   23:26:55  (  70.03,-175.52)    2.09                47
 03/28/2025   14:03:12   (  70.43, -34.92) 03/28/2025   14:04:23  (  70.35, -34.45)   19.54                71
 03/28/2025   14:53:50   ( -70.11, 132.89) 03/28/2025   14:53:55  ( -70.14, 132.87)    3.24                 5
 03/28/2025   15:44:34   (  70.02, -59.66) 03/28/2025   15:43:22  (  70.02, -59.65)    0.85                72
 03/31/2025   06:20:00   (  70.21,  81.19) 03/31/2025   06:20:51  (  70.22,  81.24)    1.82                51
 03/31/2025   07:10:42   ( -70.10,-111.31) 03/31/2025   07:10:21  ( -70.11,-111.28)    2.10                21
 03/31/2025   08:01:09   (  69.11,  57.44) 03/31/2025   08:00:03  (  69.17,  55.08)   93.54                66
 04/02/2025   22:36:51   (  70.18,-162.97) 04/02/2025   22:37:16  (  70.18,-162.93)    1.62                25
 04/02/2025   23:27:33   ( -70.06,   4.53) 04/02/2025   23:26:46  ( -70.07,   4.56)    1.79                47
 04/05/2025   14:02:59   ( -70.34, 145.25) 04/05/2025   14:04:11  ( -70.29, 145.49)   10.77                72
 04/05/2025   14:53:40   (  70.11, -47.08) 04/05/2025   14:53:39  (  70.11, -47.11)    1.27                 1
 04/05/2025   15:44:22   ( -69.98, 120.43) 04/05/2025   15:43:09  ( -70.01, 120.37)    3.46                73