Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 4.  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)
 11/06/2023   16:08:08   (  69.93, -65.92) 11/06/2023   16:08:40  (  69.90, -65.92)    3.23                32
 11/06/2023   16:58:49   ( -69.78, 101.62) 11/06/2023   16:58:10  ( -69.79, 101.56)    2.69                39
 11/09/2023   07:34:29   ( -70.36,-118.14) 11/09/2023   07:35:40  ( -70.24,-117.21)   37.24                71
 11/09/2023   08:25:06   (  69.89,  49.91) 11/09/2023   08:25:12  (  69.87,  49.90)    2.31                 6
 11/09/2023   09:15:48   ( -69.79,-142.63) 11/09/2023   09:14:42  ( -69.76,-142.62)    3.04                66
 11/11/2023   23:51:19   ( -69.96,  -1.75) 11/11/2023   23:52:15  ( -69.97,  -1.73)    1.72                56
 11/12/2023   00:42:03   (  69.85, 165.72) 11/12/2023   00:41:42  (  69.86, 165.77)    2.32                21
 11/12/2023   01:32:32   ( -69.06, -25.83) 11/12/2023   01:31:23  ( -69.15, -27.55)   69.26                69
 11/14/2023   16:08:16   ( -69.88, 114.12) 11/14/2023   16:08:47  ( -69.89, 114.04)    3.48                31
 11/14/2023   16:59:00   (  69.78, -78.41) 11/14/2023   16:58:14  (  69.78, -78.47)    2.15                46
 11/17/2023   07:34:35   (  70.13,  62.18) 11/17/2023   07:35:46  (  70.06,  62.52)   15.34                71
 11/17/2023   08:25:14   ( -69.86,-130.10) 11/17/2023   08:25:18  ( -69.85,-130.14)    2.07                 4
 11/17/2023   09:15:58   (  69.76,  37.36) 11/17/2023   09:14:45  (  69.74,  37.35)    2.99                73