Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 7.  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)   64.81                69
 07/07/2025   22:37:21   (  70.11,-163.04) 07/07/2025   22:37:33  (  70.10,-162.97)    2.79                12
 07/07/2025   23:28:02   ( -69.98,   4.48) 07/07/2025   23:27:03  ( -69.99,   4.51)    1.34                59
 07/10/2025   14:03:31   ( -70.12, 145.41) 07/10/2025   14:04:36  ( -70.14, 145.33)    3.67                65
 07/10/2025   14:54:16   (  70.05, -47.18) 07/10/2025   14:54:03  (  70.03, -47.18)    1.87                13
 07/10/2025   15:44:50   ( -69.54, 120.89) 07/10/2025   15:43:39  ( -69.59, 119.84)   41.01                71
 07/13/2025   06:20:27   ( -70.10, -98.81) 07/13/2025   06:21:05  ( -70.11, -98.82)    0.94                38
 07/13/2025   07:11:11   (  69.99,  68.68) 07/13/2025   07:10:32  (  70.00,  68.67)    1.55                39
 07/15/2025   21:46:47   (  70.56,-151.08) 07/15/2025   21:47:58  (  70.45,-150.07)   39.33                71
 07/15/2025   22:37:22   ( -70.10,  16.97) 07/15/2025   22:37:33  ( -70.07,  17.01)    2.84                11
 07/15/2025   23:28:05   (  69.93,-175.48) 07/15/2025   23:27:00  (  69.96,-175.50)    3.18                65
 07/18/2025   14:03:35   (  70.14, -34.65) 07/18/2025   14:04:32  (  70.12, -34.66)    2.21                57
 07/18/2025   14:54:17   ( -70.04, 132.83) 07/18/2025   14:54:02  ( -70.02, 132.83)    1.62                15
 07/18/2025   15:44:48   (  69.24, -58.70) 07/18/2025   15:43:40  (  69.30, -60.52)   71.58                68