Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 27.  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)
 03/28/2025   14:03:12   (  70.42, -34.91) 03/28/2025   14:04:23  (  70.36, -34.44)   18.57                71
 03/28/2025   14:53:51   ( -70.16, 132.82) 03/28/2025   14:53:55  ( -70.14, 132.87)    2.71                 4
 03/28/2025   15:44:34   (  70.01, -59.64) 03/28/2025   15:43:22  (  70.03, -59.64)    3.03                72
 03/31/2025   06:20:00   (  70.20,  81.21) 03/31/2025   06:20:52  (  70.18,  81.19)    2.17                52
 03/31/2025   07:10:42   ( -70.09,-111.30) 03/31/2025   07:10:22  ( -70.07,-111.34)    2.49                20
 03/31/2025   08:01:10   (  69.15,  57.38) 03/31/2025   08:00:03  (  69.19,  55.11)   90.21                67
 04/02/2025   22:36:50   (  70.16,-162.94) 04/02/2025   22:37:16  (  70.16,-162.96)    0.78                26
 04/02/2025   23:27:32   ( -70.04,   4.56) 04/02/2025   23:26:46  ( -70.05,   4.52)    1.63                46
 04/05/2025   14:03:00   ( -70.37, 145.21) 04/05/2025   14:04:12  ( -70.29, 145.49)   13.54                72
 04/05/2025   14:53:41   (  70.13, -47.11) 04/05/2025   14:53:40  (  70.12, -47.11)    1.32                 1
 04/05/2025   15:44:23   ( -70.01, 120.39) 04/05/2025   15:43:10  ( -70.01, 120.37)    0.70                73
 04/08/2025   06:19:48   ( -70.20, -98.74) 04/08/2025   06:20:36  ( -70.19, -98.75)    0.94                48
 04/08/2025   07:10:31   (  70.07,  68.76) 04/08/2025   07:10:03  (  70.07,  68.73)    1.36                28