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   (  70.97,-113.05) 12/07/2022   19:14:03  (  70.86,-110.89)   79.36                67
 12/07/2022   20:03:05   ( -70.12,  55.70) 12/07/2022   20:03:44  ( -70.15,  55.68)    2.41                39
 12/07/2022   20:53:49   (  70.04,-136.87) 12/07/2022   20:53:11  (  70.05,-136.82)    2.03                38
 12/07/2022   21:44:00   ( -69.30,  31.61) 12/07/2022   21:42:51  ( -69.38,  29.91)   67.33                69
 12/10/2022   20:33:36   ( -70.19,  47.98) 12/10/2022   20:34:38  ( -70.21,  48.04)    2.96                62
 12/10/2022   21:24:19   (  70.06,-144.51) 12/10/2022   21:24:06  (  70.05,-144.54)    2.05                13
 12/10/2022   22:14:43   ( -70.01,  22.97) 12/10/2022   22:13:35  ( -69.99,  23.02)    2.32                68
 12/13/2022   21:04:15   ( -70.73,  39.51) 12/13/2022   21:05:24  ( -70.63,  40.94)   53.62                69
 12/13/2022   21:54:48   (  70.10,-152.17) 12/13/2022   21:54:59  (  70.08,-152.22)    2.27                11
 12/13/2022   22:45:12   ( -70.02,  15.34) 12/13/2022   22:44:28  ( -70.03,  15.35)    1.14                44
 12/16/2022   22:25:18   (  70.15,-159.85) 12/16/2022   22:25:52  (  70.15,-159.84)    0.80                34
 12/16/2022   23:15:42   ( -70.04,   7.70) 12/16/2022   23:15:22  ( -70.05,   7.64)    2.11                20
 12/17/2022   00:06:09   (  69.11, 176.37) 12/17/2022   00:05:03  (  69.16, 174.09)   90.63                66