Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 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)
 05/23/2025   14:03:04   ( -70.27, 145.30) 05/23/2025   14:04:16  ( -70.24, 145.46)    6.82                72
 05/23/2025   14:53:47   (  70.08, -47.10) 05/23/2025   14:53:44  (  70.08, -47.12)    0.81                 3
 05/23/2025   15:44:27   ( -69.90, 120.49) 05/23/2025   15:43:15  ( -69.91, 120.27)    8.28                72
 05/26/2025   06:20:00   ( -70.18, -98.80) 05/26/2025   06:20:47  ( -70.17, -98.76)    1.73                47
 05/26/2025   07:10:44   (  70.04,  68.72) 05/26/2025   07:10:14  (  70.07,  68.74)    3.16                30
 05/28/2025   21:46:29   (  70.95,-151.60) 05/28/2025   21:47:36  (  70.85,-149.49)   77.58                67
 05/28/2025   22:36:56   ( -70.14,  17.01) 05/28/2025   22:37:16  ( -70.14,  17.08)    2.63                20
 05/28/2025   23:27:40   (  70.01,-175.47) 05/28/2025   23:26:44  (  69.98,-175.50)    3.16                56
 05/31/2025   14:03:11   (  70.19, -34.61) 05/31/2025   14:04:16  (  70.20, -34.58)    1.92                65
 05/31/2025   14:53:52   ( -70.06, 132.90) 05/31/2025   14:53:46  ( -70.09, 132.90)    3.59                 6
 05/31/2025   15:44:30   (  69.61, -59.11) 05/31/2025   15:43:19  (  69.65, -60.07)   37.31                71
 06/03/2025   06:20:08   (  70.16,  81.19) 06/03/2025   06:20:46  (  70.13,  81.21)    3.34                38
 06/03/2025   07:10:49   ( -70.04,-111.30) 06/03/2025   07:10:16  ( -70.03,-111.31)    0.81                33
 06/05/2025   21:46:31   ( -70.80,  28.62) 06/05/2025   21:47:40  ( -70.65,  30.22)   60.72                69
 06/05/2025   22:37:04   (  70.09,-162.94) 06/05/2025   22:37:15  (  70.10,-162.95)    1.52                11
 06/05/2025   23:27:46   ( -70.02,   4.49) 06/05/2025   23:26:45  ( -70.00,   4.54)    2.53                61