Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 2.  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)
 07/02/2025   14:03:30   (  70.14, -34.62) 07/02/2025   14:04:35  (  70.13, -34.69)    2.68                65
 07/02/2025   14:54:12   ( -70.07, 132.80) 07/02/2025   14:54:04  ( -70.07, 132.86)    2.29                 8
 07/02/2025   15:44:49   (  69.56, -59.13) 07/02/2025   15:43:38  (  69.59, -60.17)   40.53                71
 07/05/2025   06:20:25   (  70.12,  81.17) 07/05/2025   06:21:04  (  70.09,  81.14)    3.41                39
 07/05/2025   07:11:06   ( -70.00,-111.32) 07/05/2025   07:10:34  ( -69.99,-111.38)    2.65                32
 07/07/2025   21:46:48   ( -70.81,  28.53) 07/07/2025   21:47:57  ( -70.70,  30.27)   65.01                69
 07/07/2025   22:37:21   (  70.11,-163.05) 07/07/2025   22:37:33  (  70.10,-162.97)    3.36                12
 07/07/2025   23:28:02   ( -69.98,   4.48) 07/07/2025   23:27:03  ( -69.99,   4.51)    2.23                59
 07/10/2025   14:03:32   ( -70.17, 145.32) 07/10/2025   14:04:36  ( -70.15, 145.34)    2.68                64
 07/10/2025   14:54:16   (  70.05, -47.19) 07/10/2025   14:54:03  (  70.03, -47.18)    2.12                13
 07/10/2025   15:44:50   ( -69.54, 120.89) 07/10/2025   15:43:39  ( -69.60, 119.86)   40.55                71
 07/13/2025   06:20:27   ( -70.11, -98.82) 07/13/2025   06:21:05  ( -70.13, -98.80)    2.27                38
 07/13/2025   07:11:11   (  70.00,  68.66) 07/13/2025   07:10:32  (  70.01,  68.68)    1.76                39
 07/15/2025   21:46:48   (  70.63,-151.18) 07/15/2025   21:47:58  (  70.47,-150.05)   45.48                70
 07/15/2025   22:37:22   ( -70.10,  16.96) 07/15/2025   22:37:33  ( -70.09,  17.04)    3.04                11
 07/15/2025   23:28:05   (  69.95,-175.49) 07/15/2025   23:27:00  (  69.98,-175.48)    3.40                65