Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2022 12 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)
 12/04/2022   18:42:12   (  70.17,-104.17) 12/04/2022   18:43:21  (  70.16,-104.20)    2.26                69
 12/04/2022   19:32:36   ( -70.11,  63.32) 12/04/2022   19:32:50  ( -70.10,  63.35)    1.93                14
 12/04/2022   20:23:19   (  69.99,-129.18) 12/04/2022   20:22:17  (  70.00,-129.15)    1.54                62
 12/07/2022   19:12:57   (  70.95,-113.02) 12/07/2022   19:14:04  (  70.85,-110.90)   78.01                67
 12/07/2022   20:03:07   ( -70.16,  55.64) 12/07/2022   20:03:45  ( -70.14,  55.67)    2.29                38
 12/07/2022   20:53:50   (  70.03,-136.85) 12/07/2022   20:53:12  (  70.04,-136.83)    1.15                38
 12/07/2022   21:44:01   ( -69.28,  31.64) 12/07/2022   21:42:53  ( -69.32,  29.83)   71.21                68
 12/10/2022   20:33:36   ( -70.14,  48.05) 12/10/2022   20:34:39  ( -70.16,  47.98)    3.65                63
 12/10/2022   21:24:20   (  70.07,-144.53) 12/10/2022   21:24:06  (  70.05,-144.53)    2.08                14
 12/10/2022   22:14:44   ( -70.01,  22.96) 12/10/2022   22:13:35  ( -70.00,  23.03)    2.70                69
 12/13/2022   21:04:17   ( -70.70,  39.56) 12/13/2022   21:05:26  ( -70.60,  40.89)   50.31                69
 12/13/2022   21:54:51   (  70.12,-152.22) 12/13/2022   21:55:00  (  70.11,-152.18)    2.00                 9
 12/13/2022   22:45:14   ( -69.99,  15.38) 12/13/2022   22:44:30  ( -70.01,  15.30)    3.36                44