Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 25.  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)
 05/26/2025   06:20:00   ( -70.17, -98.79) 05/26/2025   06:20:47  ( -70.18, -98.75)    1.59                47
 05/26/2025   07:10:44   (  70.03,  68.73) 05/26/2025   07:10:15  (  70.02,  68.68)    2.32                29
 05/28/2025   21:46:28   (  70.94,-151.59) 05/28/2025   21:47:35  (  70.86,-149.48)   77.39                67
 05/28/2025   22:36:56   ( -70.14,  17.02) 05/28/2025   22:37:16  ( -70.15,  17.10)    2.96                20
 05/28/2025   23:27:40   (  70.00,-175.46) 05/28/2025   23:26:44  (  69.99,-175.48)    1.30                56
 05/31/2025   14:03:11   (  70.18, -34.60) 05/31/2025   14:04:17  (  70.16, -34.64)    2.70                66
 05/31/2025   14:53:52   ( -70.06, 132.91) 05/31/2025   14:53:47  ( -70.05, 132.84)    2.80                 5
 05/31/2025   15:44:30   (  69.60, -59.10) 05/31/2025   15:43:19  (  69.67, -60.05)   37.53                71
 06/03/2025   06:20:08   (  70.15,  81.20) 06/03/2025   06:20:46  (  70.15,  81.23)    1.25                38
 06/03/2025   07:10:49   ( -70.03,-111.29) 06/03/2025   07:10:16  ( -70.04,-111.29)    1.46                33
 06/05/2025   21:46:31   ( -70.79,  28.64) 06/05/2025   21:47:40  ( -70.67,  30.24)   60.60                69
 06/05/2025   22:37:04   (  70.08,-162.93) 06/05/2025   22:37:16  (  70.07,-163.00)    2.99                12
 06/05/2025   23:27:46   ( -70.01,   4.50) 06/05/2025   23:26:45  ( -70.02,   4.57)    2.84                61