Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 2.  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)
 11/03/2023   23:51:09   (  69.94, 178.31) 11/03/2023   23:52:05  (  69.94, 178.27)    1.84                56
 11/04/2023   00:41:51   ( -69.85, -14.23) 11/04/2023   00:41:34  ( -69.87, -14.19)    3.21                17
 11/04/2023   01:32:22   (  69.04, 154.24) 11/04/2023   01:31:14  (  69.05, 152.36)   75.02                68
 11/06/2023   16:08:07   (  69.88, -65.84) 11/06/2023   16:08:31  (  69.89, -65.90)    2.35                24
 11/06/2023   16:58:49   ( -69.79, 101.62) 11/06/2023   16:58:01  ( -69.78, 101.58)    1.90                48
 11/09/2023   07:34:22   ( -70.00,-117.57) 11/09/2023   07:35:29  ( -69.98,-117.52)    2.69                67
 11/09/2023   08:25:06   (  69.89,  49.91) 11/09/2023   08:24:56  (  69.87,  49.97)    3.20                10
 11/09/2023   09:15:42   ( -69.47,-142.16) 11/09/2023   09:14:30  ( -69.54,-142.85)   27.88                72
 11/11/2023   23:51:18   ( -69.90,  -1.67) 11/11/2023   23:51:53  ( -69.92,  -1.69)    2.52                35
 11/12/2023   00:42:02   (  69.80, 165.80) 11/12/2023   00:41:20  (  69.81, 165.80)    1.68                42
 11/14/2023   15:17:35   (  70.04, -53.43) 11/14/2023   15:18:47  (  70.00, -53.32)    5.81                72
 11/14/2023   16:08:16   ( -69.87, 114.13) 11/14/2023   16:08:17  ( -69.89, 114.16)    2.34                 1
 11/14/2023   16:58:58   (  69.66, -78.25) 11/14/2023   16:57:45  (  69.72, -78.42)    9.13                73