Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 6.  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)
 04/07/2024   22:36:08   ( -70.54,  16.29) 04/07/2024   22:37:19  ( -70.42,  17.37)   42.00                71
 04/07/2024   23:26:44   (  70.01,-175.58) 04/07/2024   23:26:52  (  69.99,-175.61)    2.65                 8
 04/08/2024   00:17:26   ( -69.91,  -8.11) 04/08/2024   00:16:21  ( -69.93,  -8.06)    3.15                65
 04/10/2024   14:52:56   ( -70.10, 132.75) 04/10/2024   14:53:53  ( -70.10, 132.79)    1.51                57
 04/10/2024   15:43:40   (  69.99, -59.78) 04/10/2024   15:43:20  (  70.00, -59.72)    2.29                20
 04/10/2024   16:34:10   ( -69.26, 108.62) 04/10/2024   16:33:01  ( -69.28, 106.94)   65.94                69
 04/13/2024   07:09:51   ( -70.03,-111.38) 04/13/2024   07:10:22  ( -70.04,-111.43)    1.91                31
 04/13/2024   08:00:35   (  69.93,  56.08) 04/13/2024   07:59:49  (  69.93,  56.06)    1.14                46
 04/15/2024   22:36:06   (  70.24,-163.25) 04/15/2024   22:37:17  (  70.22,-162.93)   12.48                71
 04/15/2024   23:26:46   ( -70.03,   4.40) 04/15/2024   23:26:49  ( -70.01,   4.40)    2.77                 3
 04/16/2024   00:17:29   (  69.88, 171.94) 04/16/2024   00:16:16  (  69.89, 171.89)    2.21                73
 04/18/2024   14:52:59   (  70.09, -47.24) 04/18/2024   14:53:46  (  70.11, -47.21)    1.91                47
 04/18/2024   15:43:41   ( -69.98, 120.24) 04/18/2024   15:43:16  ( -70.01, 120.29)    3.01                25