Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 17.  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)
 04/18/2024   14:52:58   (  70.08, -47.22) 04/18/2024   14:53:44  (  70.11, -47.20)    3.07                46
 04/18/2024   15:43:40   ( -69.98, 120.25) 04/18/2024   15:43:14  ( -69.99, 120.27)    1.43                26
 04/21/2024   06:19:23   ( -70.91,-100.08) 04/21/2024   06:20:31  ( -70.81, -97.93)   79.41                68
 04/21/2024   07:09:52   (  70.02,  68.65) 04/21/2024   07:10:10  (  70.04,  68.60)    3.24                18
 04/21/2024   08:00:34   ( -69.92,-123.88) 04/21/2024   07:59:40  ( -69.93,-123.93)    2.08                54
 04/23/2024   22:36:03   ( -70.13,  16.95) 04/23/2024   22:37:07  ( -70.14,  16.99)    2.10                64
 04/23/2024   23:26:47   (  70.03,-175.59) 04/23/2024   23:26:34  (  70.03,-175.53)    2.25                13
 04/24/2024   00:17:21   ( -69.50,  -7.49) 04/24/2024   00:16:10  ( -69.59,  -8.50)   40.32                71
 04/26/2024   14:52:57   ( -70.10, 132.77) 04/26/2024   14:53:31  ( -70.08, 132.80)    2.96                34
 04/26/2024   15:43:40   (  69.95, -59.69) 04/26/2024   15:42:58  (  69.96, -59.72)    1.79                42
 04/29/2024   06:19:10   (  70.31,  80.92) 04/29/2024   06:20:21  (  70.23,  81.28)   16.03                71
 04/29/2024   07:09:49   ( -70.04,-111.36) 04/29/2024   07:09:52  ( -70.07,-111.31)    3.33                 3
 04/29/2024   08:00:32   (  69.89,  56.18) 04/29/2024   07:59:20  (  69.89,  56.08)    3.87                72