Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 3 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)
 03/03/2023   15:18:42   (  70.11, -53.43) 03/03/2023   15:19:14  (  70.09, -53.38)    2.77                32
 03/03/2023   16:09:23   ( -69.96, 114.11) 03/03/2023   16:08:44  ( -69.97, 114.10)    1.18                39
 03/06/2023   06:44:59   ( -70.56,-105.67) 03/06/2023   06:46:10  ( -70.42,-104.66)   40.59                71
 03/06/2023   07:35:35   (  70.02,  62.47) 03/06/2023   07:35:42  (  70.04,  62.44)    1.97                 7
 03/06/2023   08:26:17   ( -69.93,-130.08) 03/06/2023   08:25:12  ( -69.93,-130.08)    0.48                65
 03/08/2023   23:01:45   ( -70.12,  10.79) 03/08/2023   23:02:42  ( -70.12,  10.79)    0.07                57
 03/08/2023   23:52:29   (  70.01, 178.26) 03/08/2023   23:52:09  (  70.00, 178.28)    0.65                20
 03/09/2023   00:42:59   ( -69.28, -13.36) 03/09/2023   00:41:50  ( -69.29, -15.06)   67.10                69
 03/11/2023   15:18:37   ( -70.05, 126.65) 03/11/2023   15:19:08  ( -70.04, 126.58)    3.00                31
 03/11/2023   16:09:21   (  69.95, -65.88) 03/11/2023   16:08:35  (  69.93, -65.94)    3.09                46
 03/14/2023   06:44:51   (  70.26,  74.78) 03/14/2023   06:46:02  (  70.20,  75.06)   12.73                71
 03/14/2023   07:35:31   ( -70.06,-117.59) 03/14/2023   07:35:33  ( -70.04,-117.54)    2.69                 2
 03/14/2023   08:26:13   (  69.85,  50.04) 03/14/2023   08:25:01  (  69.87,  49.87)    6.82                72