Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 8.  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)
 07/10/2025   14:03:32   ( -70.16, 145.35) 07/10/2025   14:04:36  ( -70.15, 145.34)    0.84                64
 07/10/2025   14:54:15   (  70.03, -47.16) 07/10/2025   14:54:02  (  70.04, -47.16)    1.44                13
 07/10/2025   15:44:49   ( -69.53, 120.91) 07/10/2025   15:43:38  ( -69.60, 119.86)   41.56                71
 07/13/2025   06:20:27   ( -70.14, -98.87) 07/13/2025   06:21:04  ( -70.13, -98.80)    3.36                37
 07/13/2025   07:11:11   (  70.03,  68.62) 07/13/2025   07:10:31  (  70.02,  68.69)    2.89                40
 07/15/2025   21:46:48   (  70.60,-151.14) 07/15/2025   21:47:58  (  70.47,-150.05)   43.13                70
 07/15/2025   22:37:22   ( -70.08,  16.99) 07/15/2025   22:37:33  ( -70.09,  17.03)    1.67                11
 07/15/2025   23:28:06   (  69.97,-175.53) 07/15/2025   23:27:00  (  69.98,-175.48)    1.98                66
 07/18/2025   14:03:35   (  70.13, -34.63) 07/18/2025   14:04:32  (  70.14, -34.64)    0.99                57
 07/18/2025   14:54:17   ( -70.03, 132.84) 07/18/2025   14:54:02  ( -70.04, 132.85)    1.19                15
 07/18/2025   15:44:48   (  69.23, -58.69) 07/18/2025   15:43:40  (  69.31, -60.50)   71.85                68
 07/21/2025   06:20:30   (  70.08,  81.21) 07/21/2025   06:21:01  (  70.07,  81.15)    2.44                31
 07/21/2025   07:11:11   ( -69.97,-111.31) 07/21/2025   07:10:30  ( -69.97,-111.35)    1.74                41