Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 6 19.  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)
 06/21/2024   14:02:46   ( -70.78, 144.42) 06/21/2024   14:03:55  ( -70.64, 146.06)   62.30                69
 06/21/2024   14:53:19   (  70.07, -47.15) 06/21/2024   14:53:31  (  70.04, -47.17)    3.16                12
 06/21/2024   15:44:00   ( -69.94, 120.37) 06/21/2024   15:43:01  ( -69.93, 120.31)    2.26                59
 06/24/2024   06:19:31   ( -70.12, -98.77) 06/24/2024   06:20:34  ( -70.15, -98.79)    2.58                63
 06/24/2024   07:10:16   (  70.05,  68.65) 06/24/2024   07:10:01  (  70.04,  68.71)    2.37                15
 06/24/2024   08:00:49   ( -69.49,-123.20) 06/24/2024   07:59:38  ( -69.55,-124.34)   44.60                71
 06/26/2024   22:36:29   ( -70.11,  17.02) 06/26/2024   22:37:05  ( -70.12,  17.06)    2.56                36
 06/26/2024   23:27:13   (  69.98,-175.48) 06/26/2024   23:26:33  (  69.96,-175.53)    2.85                40
 06/29/2024   14:02:51   (  70.50, -35.15) 06/29/2024   14:04:02  (  70.40, -34.29)   33.79                71
 06/29/2024   14:53:27   ( -70.09, 132.81) 06/29/2024   14:53:36  ( -70.07, 132.87)    3.16                 9
 06/29/2024   15:44:11   (  69.97, -59.70) 06/29/2024   15:43:03  (  69.96, -59.64)    2.65                68
 07/02/2024   06:19:42   (  70.13,  81.20) 07/02/2024   06:20:37  (  70.10,  81.16)    3.34                55
 07/02/2024   07:10:24   ( -70.03,-111.34) 07/02/2024   07:10:06  ( -70.05,-111.27)    3.41                18
 07/02/2024   08:00:54   (  69.17,  57.23) 07/02/2024   07:59:46  (  69.22,  55.24)   78.70                68