Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 4.  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)
 07/05/2025   06:20:25   (  70.10,  81.21) 07/05/2025   06:21:04  (  70.12,  81.18)    2.86                39
 07/05/2025   07:11:07   ( -70.03,-111.36) 07/05/2025   07:10:34  ( -70.01,-111.35)    1.90                33
 07/07/2025   21:46:49   ( -70.84,  28.48) 07/07/2025   21:47:57  ( -70.72,  30.30)   67.84                68
 07/07/2025   22:37:21   (  70.09,-163.01) 07/07/2025   22:37:34  (  70.07,-163.02)    2.31                13
 07/07/2025   23:28:02   ( -69.95,   4.51) 07/07/2025   23:27:04  ( -69.96,   4.46)    1.88                58
 07/10/2025   14:03:31   ( -70.15, 145.36) 07/10/2025   14:04:35  ( -70.16, 145.36)    1.64                64
 07/10/2025   14:54:15   (  70.03, -47.15) 07/10/2025   14:54:02  (  70.05, -47.15)    2.77                13
 07/10/2025   15:44:49   ( -69.52, 120.92) 07/10/2025   15:43:38  ( -69.62, 119.88)   42.11                71
 07/13/2025   06:20:27   ( -70.14, -98.86) 07/13/2025   06:21:04  ( -70.13, -98.79)    2.51                37
 07/13/2025   07:11:11   (  70.02,  68.62) 07/13/2025   07:10:31  (  70.02,  68.69)    2.65                40
 07/15/2025   21:46:48   (  70.60,-151.14) 07/15/2025   21:47:58  (  70.47,-150.05)   42.85                70
 07/15/2025   22:37:22   ( -70.08,  17.00) 07/15/2025   22:37:33  ( -70.09,  17.04)    2.41                11
 07/15/2025   23:28:06   (  69.97,-175.53) 07/15/2025   23:27:00  (  69.98,-175.48)    1.98                66