Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 10 30.  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)
 11/01/2023   07:34:21   (  70.53,  61.65) 11/01/2023   07:35:30  (  70.45,  63.12)   55.17                69
 11/01/2023   08:24:53   ( -69.91,-130.07) 11/01/2023   08:25:08  ( -69.90,-130.05)    1.42                15
 11/01/2023   09:15:37   (  69.79,  37.42) 11/01/2023   09:14:35  (  69.79,  37.45)    1.44                62
 11/03/2023   23:51:09   (  69.93, 178.33) 11/03/2023   23:52:05  (  69.94, 178.27)    2.40                56
 11/04/2023   00:41:51   ( -69.83, -14.20) 11/04/2023   00:41:35  ( -69.82, -14.25)    2.21                16
 11/04/2023   01:32:22   (  69.03, 154.26) 11/04/2023   01:31:14  (  69.05, 152.36)   75.66                68
 11/06/2023   16:08:08   (  69.93, -65.90) 11/06/2023   16:08:30  (  69.93, -65.84)    2.50                22
 11/06/2023   16:58:50   ( -69.82, 101.57) 11/06/2023   16:58:00  ( -69.82, 101.64)    2.86                50
 11/09/2023   07:34:21   ( -69.98,-117.55) 11/09/2023   07:35:27  ( -69.99,-117.49)    2.34                66
 11/09/2023   08:25:05   (  69.88,  49.92) 11/09/2023   08:24:54  (  69.88,  49.99)    2.79                11
 11/09/2023   09:15:41   ( -69.45,-142.14) 11/09/2023   09:14:29  ( -69.50,-142.90)   29.89                72
 11/11/2023   23:51:18   ( -69.89,  -1.65) 11/11/2023   23:51:52  ( -69.91,  -1.71)    2.87                34
 11/12/2023   00:42:02   (  69.79, 165.81) 11/12/2023   00:41:19  (  69.79, 165.77)    1.38                43