Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2022 12 12.  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)
 12/13/2022   07:53:29   ( -70.18,-122.00) 12/13/2022   07:54:28  ( -70.17,-121.97)    1.57                59
 12/13/2022   08:44:13   (  70.06,  45.49) 12/13/2022   08:43:55  (  70.07,  45.53)    2.02                18
 12/13/2022   09:34:41   ( -69.75,-146.68) 12/13/2022   09:33:28  ( -69.79,-147.22)   21.37                73
 12/16/2022   04:17:41   (  70.14, 112.02) 12/16/2022   04:18:09  (  70.12, 112.04)    2.25                28
 12/16/2022   05:08:13   ( -70.02, -80.45) 12/16/2022   05:07:39  ( -70.01, -80.48)    1.83                34
 12/18/2022   23:51:09   (  70.29, 178.43) 12/18/2022   23:52:20  (  70.25, 178.67)    9.72                71
 12/19/2022   00:41:40   ( -70.09, -13.92) 12/19/2022   00:41:51  ( -70.09, -13.93)    0.52                11
 12/19/2022   01:32:23   (  69.96, 153.60) 12/19/2022   01:31:18  (  69.98, 153.56)    2.93                65
 12/21/2022   20:15:07   ( -70.13,  52.67) 12/21/2022   20:16:04  ( -70.15,  52.60)    3.14                57
 12/21/2022   21:05:50   (  70.02,-139.85) 12/21/2022   21:05:31  (  70.04,-139.92)    3.10                19
 12/21/2022   21:56:17   ( -69.60,  28.13) 12/21/2022   21:55:06  ( -69.66,  27.19)   37.13                71
 12/24/2022   16:39:17   (  70.10, -73.33) 12/24/2022   16:39:43  (  70.12, -73.35)    2.45                26
 12/24/2022   17:29:51   ( -70.02,  94.15) 12/24/2022   17:29:13  ( -70.02,  94.14)    0.42                38