Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 15.  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)
 03/15/2025   06:20:12   (  70.19,  81.19) 03/15/2025   06:21:04  (  70.17,  81.16)    2.85                52
 03/15/2025   07:10:54   ( -70.11,-111.36) 03/15/2025   07:10:33  ( -70.11,-111.29)    2.52                21
 03/15/2025   08:01:22   (  69.14,  57.36) 03/15/2025   08:00:15  (  69.18,  55.08)   90.48                67
 03/17/2025   22:37:05   (  70.13,-162.94) 03/17/2025   22:37:30  (  70.15,-162.99)    2.80                25
 03/17/2025   23:27:47   ( -70.04,   4.52) 03/17/2025   23:27:00  ( -70.04,   4.49)    1.28                47
 03/20/2025   14:03:16   ( -70.29, 145.28) 03/20/2025   14:04:27  ( -70.29, 145.47)    7.00                71
 03/20/2025   14:53:59   (  70.13, -47.17) 03/20/2025   14:53:55  (  70.12, -47.13)    1.81                 4
 03/20/2025   15:44:39   ( -69.93, 120.46) 03/20/2025   15:43:26  ( -69.96, 120.27)    7.97                73
 03/23/2025   06:20:07   ( -70.19, -98.80) 03/23/2025   06:20:51  ( -70.22, -98.74)    3.25                44
 03/23/2025   07:10:51   (  70.10,  68.66) 03/23/2025   07:10:18  (  70.10,  68.74)    3.03                33
 03/25/2025   21:46:28   (  70.81,-151.32) 03/25/2025   21:47:37  (  70.69,-149.78)   57.90                69
 03/25/2025   22:37:00   ( -70.17,  17.02) 03/25/2025   22:37:15  ( -70.14,  17.05)    3.13                15
 03/25/2025   23:27:43   (  70.03,-175.45) 03/25/2025   23:26:42  (  70.02,-175.47)    0.66                61
 03/28/2025   14:03:10   (  70.22, -34.61) 03/28/2025   14:04:07  (  70.23, -34.55)    2.02                57
 03/28/2025   14:53:52   ( -70.10, 132.89) 03/28/2025   14:53:37  ( -70.12, 132.93)    2.27                15
 03/28/2025   15:44:23   (  69.33, -58.66) 03/28/2025   15:43:15  (  69.39, -60.43)   69.76                68