Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 9 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)
 09/03/2023   16:07:46   (  69.97, -65.82) 09/03/2023   16:08:26  (  69.96, -65.83)    1.63                40
 09/03/2023   16:58:27   ( -69.84, 101.70) 09/03/2023   16:57:56  ( -69.85, 101.64)    2.21                31
 09/06/2023   07:34:09   ( -70.72,-118.53) 09/06/2023   07:35:17  ( -70.61,-116.64)   70.47                68
 09/06/2023   08:24:40   (  69.91,  50.04) 09/06/2023   08:24:55  (  69.91,  49.98)    2.60                15
 09/06/2023   09:15:22   ( -69.83,-142.52) 09/06/2023   09:14:24  ( -69.85,-142.47)    3.07                58
 09/08/2023   23:50:51   ( -69.98,  -1.61) 09/08/2023   23:51:57  ( -69.98,  -1.67)    2.54                66
 09/09/2023   00:41:35   (  69.86, 165.89) 09/09/2023   00:41:24  (  69.87, 165.82)    3.15                11
 09/09/2023   01:32:11   ( -69.46, -26.21) 09/09/2023   01:30:59  ( -69.49, -27.07)   33.83                72
 09/11/2023   16:07:47   ( -69.99, 114.15) 09/11/2023   16:08:25  ( -69.98, 114.21)    2.67                38
 09/11/2023   16:58:31   (  69.87, -78.36) 09/11/2023   16:57:52  (  69.86, -78.31)    2.25                39
 09/14/2023   07:34:08   (  70.46,  61.86) 09/14/2023   07:35:18  (  70.31,  62.94)   44.12                70
 09/14/2023   08:24:42   ( -69.95,-130.04) 09/14/2023   08:24:53  ( -69.93,-129.96)    3.56                11
 09/14/2023   09:15:26   (  69.84,  37.45) 09/14/2023   09:14:20  (  69.82,  37.52)    3.49                66