Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 5 13.  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)
 05/15/2024   06:19:07   (  70.84,  80.14) 05/15/2024   06:20:15  (  70.74,  81.98)   68.06                68
 05/15/2024   07:09:36   ( -70.08,-111.32) 05/15/2024   07:09:55  ( -70.08,-111.37)    1.89                19
 05/15/2024   08:00:20   (  69.96,  56.17) 05/15/2024   07:59:22  (  69.97,  56.13)    2.07                58
 05/17/2024   22:35:45   (  70.18,-163.00) 05/17/2024   22:36:47  (  70.16,-162.98)    2.16                62
 05/17/2024   23:26:26   ( -70.04,   4.53) 05/17/2024   23:26:17  ( -70.05,   4.49)    1.34                 9
 05/18/2024   00:17:01   (  69.45, 172.71) 05/18/2024   00:15:51  (  69.55, 171.45)   50.40                70
 05/20/2024   14:52:35   (  70.12, -47.12) 05/20/2024   14:53:09  (  70.10, -47.16)    2.86                34
 05/20/2024   15:43:17   ( -70.04, 120.33) 05/20/2024   15:42:38  ( -70.04, 120.39)    2.31                39
 05/23/2024   06:18:47   ( -70.51, -99.25) 05/23/2024   06:19:58  ( -70.40, -98.47)   31.89                71
 05/23/2024   07:09:25   (  70.09,  68.73) 05/23/2024   07:09:29  (  70.06,  68.70)    3.37                 4
 05/23/2024   08:00:07   ( -70.00,-123.82) 05/23/2024   07:58:58  ( -70.00,-123.75)    2.64                69
 05/25/2024   22:35:30   ( -70.14,  17.14) 05/25/2024   22:36:20  ( -70.17,  17.12)    3.21                50
 05/25/2024   23:26:14   (  70.03,-175.38) 05/25/2024   23:25:47  (  70.04,-175.41)    1.99                27