Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2022 11 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)
 12/01/2022   18:11:42   (  70.15, -96.52) 12/01/2022   18:12:26  (  70.14, -96.50)    1.95                44
 12/01/2022   19:02:06   ( -70.08,  70.99) 12/01/2022   19:01:55  ( -70.07,  71.04)    2.04                11
 12/01/2022   19:52:40   (  69.49,-120.83) 12/01/2022   19:51:30  (  69.53,-122.06)   48.20                70
 12/04/2022   18:42:12   (  70.18,-104.18) 12/04/2022   18:43:17  (  70.17,-104.17)    1.28                65
 12/04/2022   19:32:36   ( -70.12,  63.31) 12/04/2022   19:32:46  ( -70.11,  63.38)    2.62                10
 12/04/2022   20:23:19   (  70.00,-129.19) 12/04/2022   20:22:13  (  70.01,-129.13)    2.60                66
 12/07/2022   19:12:52   (  70.68,-112.58) 12/07/2022   19:14:02  (  70.57,-111.31)   48.87                70
 12/07/2022   20:03:07   ( -70.15,  55.65) 12/07/2022   20:03:38  ( -70.13,  55.69)    2.87                31
 12/07/2022   20:53:50   (  70.02,-136.84) 12/07/2022   20:53:05  (  70.02,-136.82)    0.75                45
 12/07/2022   21:43:56   ( -69.01,  32.01) 12/07/2022   21:42:50  ( -69.08,  29.55)   98.48                66
 12/10/2022   20:33:37   ( -70.17,  48.01) 12/10/2022   20:34:28  ( -70.18,  48.05)    2.02                51
 12/10/2022   21:24:20   (  70.05,-144.50) 12/10/2022   21:23:55  (  70.07,-144.47)    2.54                25
 12/10/2022   22:14:40   ( -69.77,  23.31) 12/10/2022   22:13:27  ( -69.85,  22.86)   19.29                73
 12/13/2022   21:04:08   ( -70.18,  40.38) 12/13/2022   21:05:20  ( -70.16,  40.31)    3.17                72
 12/13/2022   21:54:51   (  70.08,-152.15) 12/13/2022   21:54:46  (  70.10,-152.13)    2.97                 5
 12/13/2022   22:45:15   ( -70.00,  15.36) 12/13/2022   22:44:16  ( -70.00,  15.36)    0.62                59