Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 1.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 04/01/2024   06:44:42   (  70.99,  73.43) 04/01/2024   06:45:48  (  70.90,  76.03)   95.08                66
 04/01/2024   07:35:07   ( -70.00,-117.67) 04/01/2024   07:35:32  ( -70.02,-117.63)    2.73                25
 04/01/2024   08:25:51   (  69.89,  49.81) 04/01/2024   08:25:00  (  69.86,  49.79)    3.30                51
 04/03/2024   23:01:21   (  70.06,-169.31) 04/03/2024   23:02:32  (  70.06,-169.34)    1.31                71
 04/03/2024   23:52:03   ( -69.96,  -1.84) 04/03/2024   23:52:02  ( -69.95,  -1.86)    1.65                 1
 04/04/2024   00:42:44   (  69.70, 165.86) 04/04/2024   00:41:31  (  69.73, 165.48)   15.04                73
 04/06/2024   15:18:16   (  70.04, -53.51) 04/06/2024   15:18:59  (  70.06, -53.46)    2.55                43
 04/06/2024   16:08:58   ( -69.94, 113.96) 04/06/2024   16:08:29  ( -69.95, 114.03)    2.99                29
 04/09/2024   06:44:42   ( -70.86,-106.36) 04/09/2024   06:45:49  ( -70.74,-104.22)   79.46                67
 04/09/2024   07:35:11   (  69.98,  62.36) 04/09/2024   07:35:28  (  69.97,  62.30)    2.45                17
 04/09/2024   08:25:53   ( -69.87,-130.16) 04/09/2024   08:24:58  ( -69.87,-130.21)    1.66                55
 04/11/2024   23:01:23   ( -70.08,  10.67) 04/11/2024   23:02:28  ( -70.08,  10.69)    0.86                65
 04/11/2024   23:52:07   (  69.98, 178.13) 04/11/2024   23:51:55  (  69.96, 178.17)    2.81                12
 04/12/2024   00:42:42   ( -69.50, -13.85) 04/12/2024   00:41:31  ( -69.53, -14.79)   36.76                71
 04/14/2024   15:18:18   ( -70.03, 126.51) 04/14/2024   15:18:55  ( -70.04, 126.52)    0.60                37
 04/14/2024   16:09:02   (  69.94, -66.04) 04/14/2024   16:08:22  (  69.91, -66.01)    3.03                40