Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 14.  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)
 06/16/2025   14:03:22   (  70.16, -34.61) 06/16/2025   14:04:28  (  70.14, -34.68)    3.55                66
 06/16/2025   14:54:04   ( -70.10, 132.80) 06/16/2025   14:53:57  ( -70.08, 132.87)    3.46                 7
 06/16/2025   15:44:41   (  69.58, -59.12) 06/16/2025   15:43:30  (  69.65, -60.09)   38.37                71
 06/19/2025   06:20:18   (  70.12,  81.21) 06/19/2025   06:20:59  (  70.12,  81.18)    1.37                41
 06/19/2025   07:10:59   ( -70.01,-111.30) 06/19/2025   07:10:29  ( -70.02,-111.34)    2.25                30
 06/21/2025   21:46:43   ( -70.96,  28.32) 06/21/2025   21:47:50  ( -70.86,  30.50)   80.24                67
 06/21/2025   22:37:13   (  70.09,-162.98) 06/21/2025   22:37:29  (  70.09,-162.99)    0.72                16
 06/21/2025   23:27:54   ( -69.97,   4.52) 06/21/2025   23:26:59  ( -69.99,   4.50)    2.54                55
 06/24/2025   14:03:24   ( -70.15, 145.39) 06/24/2025   14:04:33  ( -70.15, 145.33)    2.47                69
 06/24/2025   14:54:09   (  70.06, -47.17) 06/24/2025   14:54:00  (  70.04, -47.18)    2.39                 9
 06/24/2025   15:44:46   ( -69.73, 120.65) 06/24/2025   15:43:33  ( -69.78, 120.08)   22.57                73
 06/27/2025   06:20:20   ( -70.12, -98.80) 06/27/2025   06:21:03  ( -70.14, -98.80)    2.44                43
 06/27/2025   07:11:05   (  70.04,  68.62) 06/27/2025   07:10:30  (  70.02,  68.67)    2.75                35