Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 6.  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)
 07/07/2025   21:46:48   ( -70.81,  28.53) 07/07/2025   21:47:57  ( -70.69,  30.26)   64.80                69
 07/07/2025   22:37:21   (  70.11,-163.04) 07/07/2025   22:37:33  (  70.10,-162.97)    2.87                12
 07/07/2025   23:28:02   ( -69.98,   4.48) 07/07/2025   23:27:03  ( -69.99,   4.51)    1.40                59
 07/10/2025   14:03:31   ( -70.12, 145.41) 07/10/2025   14:04:36  ( -70.13, 145.32)    3.64                65
 07/10/2025   14:54:16   (  70.05, -47.18) 07/10/2025   14:54:03  (  70.03, -47.18)    2.27                13
 07/10/2025   15:44:50   ( -69.54, 120.89) 07/10/2025   15:43:39  ( -69.59, 119.84)   41.04                71
 07/13/2025   06:20:27   ( -70.11, -98.81) 07/13/2025   06:21:05  ( -70.11, -98.83)    0.69                38
 07/13/2025   07:11:11   (  69.99,  68.67) 07/13/2025   07:10:32  (  70.00,  68.66)    0.91                39
 07/15/2025   21:46:47   (  70.57,-151.08) 07/15/2025   21:47:57  (  70.50,-150.00)   40.74                70
 07/15/2025   22:37:21   ( -70.04,  17.05) 07/15/2025   22:37:33  ( -70.07,  17.00)    3.07                12
 07/15/2025   23:28:05   (  69.94,-175.48) 07/15/2025   23:27:00  (  69.95,-175.51)    2.23                65
 07/18/2025   14:03:35   (  70.15, -34.66) 07/18/2025   14:04:31  (  70.17, -34.60)    3.06                56
 07/18/2025   14:54:17   ( -70.04, 132.82) 07/18/2025   14:54:02  ( -70.01, 132.81)    3.20                15
 07/18/2025   15:44:48   (  69.25, -58.71) 07/18/2025   15:43:40  (  69.29, -60.53)   71.88                68