Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2022 12 5.  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)
 12/07/2022   19:12:56   (  70.98,-113.07) 12/07/2022   19:14:03  (  70.85,-110.91)   80.07                67
 12/07/2022   20:03:05   ( -70.14,  55.67) 12/07/2022   20:03:44  ( -70.13,  55.67)    0.62                39
 12/07/2022   20:53:48   (  70.01,-136.81) 12/07/2022   20:53:11  (  70.03,-136.83)    3.21                37
 12/07/2022   21:44:00   ( -69.32,  31.59) 12/07/2022   21:42:51  ( -69.37,  29.89)   66.76                69
 12/10/2022   20:33:36   ( -70.21,  47.96) 12/10/2022   20:34:38  ( -70.20,  48.04)    2.85                62
 12/10/2022   21:24:19   (  70.08,-144.53) 12/10/2022   21:24:05  (  70.10,-144.47)    3.14                14
 12/10/2022   22:14:42   ( -69.97,  23.03) 12/10/2022   22:13:35  ( -69.99,  23.01)    2.23                67
 12/13/2022   21:04:16   ( -70.75,  39.49) 12/13/2022   21:05:25  ( -70.63,  40.94)   54.87                69
 12/13/2022   21:54:49   (  70.11,-152.19) 12/13/2022   21:55:00  (  70.09,-152.21)    3.10                11
 12/13/2022   22:45:13   ( -70.04,  15.31) 12/13/2022   22:44:29  ( -70.04,  15.35)    1.41                44
 12/16/2022   22:25:18   (  70.16,-159.88) 12/16/2022   22:25:52  (  70.16,-159.83)    1.96                34
 12/16/2022   23:15:42   ( -70.06,   7.67) 12/16/2022   23:15:22  ( -70.06,   7.66)    0.74                20
 12/17/2022   00:06:10   (  69.17, 176.27) 12/17/2022   00:05:03  (  69.18, 174.10)   85.85                67