Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 17.  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)
 06/19/2025   06:20:18   (  70.16,  81.15) 06/19/2025   06:20:58  (  70.14,  81.20)    2.40                40
 06/19/2025   07:10:59   ( -70.04,-111.36) 06/19/2025   07:10:28  ( -70.03,-111.32)    1.98                31
 06/21/2025   21:46:43   ( -70.95,  28.34) 06/21/2025   21:47:50  ( -70.87,  30.52)   79.83                67
 06/21/2025   22:37:14   (  70.12,-163.03) 06/21/2025   22:37:29  (  70.11,-162.96)    2.83                15
 06/21/2025   23:27:55   ( -70.01,   4.46) 06/21/2025   23:26:59  ( -70.01,   4.52)    2.13                56
 06/24/2025   14:03:25   ( -70.18, 145.34) 06/24/2025   14:04:33  ( -70.18, 145.36)    1.20                68
 06/24/2025   14:54:09   (  70.04, -47.14) 06/24/2025   14:54:00  (  70.07, -47.15)    2.75                 9
 06/24/2025   15:44:46   ( -69.71, 120.67) 06/24/2025   15:43:34  ( -69.74, 120.03)   24.85                72
 06/27/2025   06:20:20   ( -70.10, -98.78) 06/27/2025   06:21:04  ( -70.12, -98.84)    2.96                44
 06/27/2025   07:11:05   (  70.02,  68.65) 06/27/2025   07:10:31  (  70.00,  68.64)    1.98                34
 06/29/2025   21:46:45   (  70.79,-151.42) 06/29/2025   21:47:54  (  70.68,-149.76)   62.35                69
 06/29/2025   22:37:15   ( -70.08,  17.02) 06/29/2025   22:37:33  ( -70.09,  17.01)    1.64                18
 06/29/2025   23:27:59   (  69.95,-175.48) 06/29/2025   23:27:00  (  69.98,-175.51)    3.11                59