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   (  70.08, -53.39) 03/03/2023   15:19:15  (  70.06, -53.42)    3.30                33
 03/03/2023   16:09:24   ( -69.99, 114.06) 03/03/2023   16:08:44  ( -70.00, 114.13)    2.62                40
 03/06/2023   06:44:59   ( -70.53,-105.64) 03/06/2023   06:46:10  ( -70.45,-104.62)   38.96                71
 03/06/2023   07:35:36   (  70.06,  62.42) 03/06/2023   07:35:42  (  70.06,  62.47)    2.30                 6
 03/06/2023   08:26:17   ( -69.96,-130.12) 03/06/2023   08:25:11  ( -69.95,-130.05)    2.97                66
 03/08/2023   23:01:44   ( -70.09,  10.82) 03/08/2023   23:02:42  ( -70.09,  10.75)    2.69                58
 03/08/2023   23:52:28   (  69.99, 178.29) 03/08/2023   23:52:09  (  69.98, 178.24)    2.32                19
 03/09/2023   00:42:58   ( -69.25, -13.33) 03/09/2023   00:41:49  ( -69.32, -15.02)   67.21                69
 03/11/2023   15:18:38   ( -70.09, 126.60) 03/11/2023   15:19:08  ( -70.07, 126.62)    1.55                30
 03/11/2023   16:09:22   (  69.98, -65.93) 03/11/2023   16:08:35  (  69.96, -65.90)    2.88                47
 03/14/2023   06:44:51   (  70.25,  74.81) 03/14/2023   06:46:03  (  70.18,  75.03)   11.34                72
 03/14/2023   07:35:31   ( -70.04,-117.56) 03/14/2023   07:35:34  ( -70.02,-117.57)    2.20                 3
 03/14/2023   08:26:14   (  69.88,  49.98) 03/14/2023   08:25:01  (  69.90,  49.91)    3.23                73