Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 11.  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)
 11/11/2023   23:51:18   ( -69.94,  -1.72) 11/11/2023   23:52:12  ( -69.94,  -1.76)    1.56                54
 11/12/2023   00:42:02   (  69.82, 165.76) 11/12/2023   00:41:39  (  69.83, 165.74)    1.63                23
 11/12/2023   01:32:30   ( -68.98, -25.72) 11/12/2023   01:31:22  ( -69.00, -27.73)   80.06                68
 11/14/2023   15:17:51   (  70.92, -54.83) 11/14/2023   15:18:57  (  70.79, -52.25)   95.11                66
 11/14/2023   16:08:16   ( -69.92, 114.06) 11/14/2023   16:08:41  ( -69.91, 114.09)    1.62                25
 11/14/2023   16:59:00   (  69.81, -78.47) 11/14/2023   16:58:08  (  69.81, -78.41)    2.25                52
 11/17/2023   07:34:31   (  69.97,  62.43) 11/17/2023   07:35:40  (  69.96,  62.41)    1.41                69
 11/17/2023   08:25:13   ( -69.87,-130.10) 11/17/2023   08:25:10  ( -69.85,-130.11)    1.94                 3
 11/17/2023   09:15:52   (  69.50,  37.75) 11/17/2023   09:14:40  (  69.58,  37.16)   24.79                72
 11/19/2023   23:51:27   (  69.93, 178.24) 11/19/2023   23:52:07  (  69.91, 178.23)    2.51                40
 11/20/2023   00:42:09   ( -69.83, -14.28) 11/20/2023   00:41:37  ( -69.81, -14.28)    2.52                32
 11/22/2023   15:17:50   ( -70.53, 125.77) 11/22/2023   15:18:59  ( -70.43, 127.22)   55.37                69
 11/22/2023   16:08:23   (  69.85, -65.88) 11/22/2023   16:08:34  (  69.88, -65.92)    3.21                11
 11/22/2023   16:59:06   ( -69.80, 101.52) 11/22/2023   16:58:04  ( -69.77, 101.57)    3.20                62