Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 5 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)
 05/23/2024   06:19:01   ( -71.14,-100.30) 05/23/2024   06:20:07  ( -71.04, -97.58)   98.63                66
 05/23/2024   07:09:28   (  70.12,  68.67) 05/23/2024   07:09:49  (  70.12,  68.69)    1.08                21
 05/23/2024   08:00:09   ( -69.99,-123.81) 05/23/2024   07:59:19  ( -70.00,-123.84)    2.17                50
 05/25/2024   22:35:43   ( -70.17,  17.03) 05/25/2024   22:36:49  ( -70.19,  17.04)    2.42                66
 05/25/2024   23:26:28   (  70.10,-175.54) 05/25/2024   23:26:16  (  70.09,-175.47)    2.83                12
 05/26/2024   00:17:03   ( -69.64,  -7.54) 05/26/2024   00:15:51  ( -69.70,  -8.37)   32.73                72
 05/28/2024   14:52:42   ( -70.11, 132.89) 05/28/2024   14:53:16  ( -70.12, 132.81)    3.06                34
 05/28/2024   15:43:27   (  70.03, -59.69) 05/28/2024   15:42:43  (  70.01, -59.70)    2.85                44
 05/31/2024   06:19:00   (  70.20,  81.19) 05/31/2024   06:20:11  (  70.21,  81.20)    1.52                71
 05/31/2024   07:09:42   ( -70.11,-111.36) 05/31/2024   07:09:41  ( -70.10,-111.32)    1.77                 1
 05/31/2024   08:00:23   (  69.83,  56.38) 05/31/2024   07:59:10  (  69.88,  56.01)   15.34                73
 06/02/2024   22:35:58   (  70.16,-163.00) 06/02/2024   22:36:35  (  70.14,-163.00)    2.30                37
 06/02/2024   23:26:39   ( -70.02,   4.54) 06/02/2024   23:26:05  ( -70.04,   4.48)    2.52                34
 06/05/2024   14:02:17   ( -70.48, 144.96) 06/05/2024   14:03:29  ( -70.37, 145.57)   25.80                72
 06/05/2024   14:52:56   (  70.09, -47.13) 06/05/2024   14:52:59  (  70.08, -47.19)    2.65                 3
 06/05/2024   15:43:38   ( -70.00, 120.33) 06/05/2024   15:42:29  ( -69.98, 120.30)    3.01                69