Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 13.  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)
 04/13/2024   07:09:51   ( -70.05,-111.41) 04/13/2024   07:10:21  ( -70.06,-111.40)    0.74                30
 04/13/2024   08:00:35   (  69.94,  56.07) 04/13/2024   07:59:48  (  69.96,  56.10)    1.91                47
 04/15/2024   22:36:07   (  70.26,-163.27) 04/15/2024   22:37:17  (  70.23,-162.91)   13.98                70
 04/15/2024   23:26:46   ( -70.00,   4.44) 04/15/2024   23:26:49  ( -70.01,   4.41)    1.70                 3
 04/16/2024   00:17:29   (  69.84, 171.99) 04/16/2024   00:16:17  (  69.85, 171.83)    6.40                72
 04/18/2024   14:52:59   (  70.11, -47.27) 04/18/2024   14:53:45  (  70.10, -47.22)    2.42                46
 04/18/2024   15:43:41   ( -70.01, 120.21) 04/18/2024   15:43:15  ( -69.99, 120.26)    3.04                26
 04/21/2024   06:19:25   ( -70.96,-100.17) 04/21/2024   06:20:32  ( -70.87, -97.84)   85.37                67
 04/21/2024   07:09:53   (  70.02,  68.64) 04/21/2024   07:10:12  (  70.04,  68.59)    2.98                19
 04/21/2024   08:00:35   ( -69.92,-123.88) 04/21/2024   07:59:42  ( -69.94,-123.92)    2.70                53
 04/23/2024   22:36:05   ( -70.15,  16.92) 04/23/2024   22:37:11  ( -70.13,  16.96)    2.22                66
 04/23/2024   23:26:48   (  69.99,-175.54) 04/23/2024   23:26:38  (  70.02,-175.56)    2.51                10
 04/24/2024   00:17:25   ( -69.62,  -7.67) 04/24/2024   00:16:13  ( -69.64,  -8.45)   30.00                72
 04/26/2024   14:52:59   ( -70.07, 132.81) 04/26/2024   14:53:37  ( -70.08, 132.78)    1.56                38
 04/26/2024   15:43:43   (  69.98, -59.74) 04/26/2024   15:43:04  (  69.96, -59.74)    1.37                39