Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 3 6.  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)
 03/06/2023   06:44:58   ( -70.52,-105.62) 03/06/2023   06:46:09  ( -70.44,-104.63)   37.93                71
 03/06/2023   07:35:35   (  70.04,  62.44) 03/06/2023   07:35:41  (  70.06,  62.47)    2.50                 6
 03/06/2023   08:26:17   ( -69.95,-130.11) 03/06/2023   08:25:11  ( -69.95,-130.06)    1.97                66
 03/08/2023   23:01:44   ( -70.09,  10.82) 03/08/2023   23:02:41  ( -70.09,  10.76)    2.16                57
 03/08/2023   23:52:28   (  69.98, 178.30) 03/08/2023   23:52:08  (  69.99, 178.25)    1.74                20
 03/09/2023   00:42:57   ( -69.20, -13.25) 03/09/2023   00:41:49  ( -69.27, -15.09)   72.73                68
 03/11/2023   15:18:37   ( -70.05, 126.66) 03/11/2023   15:19:06  ( -70.08, 126.63)    3.17                29
 03/11/2023   16:09:21   (  69.94, -65.87) 03/11/2023   16:08:33  (  69.97, -65.88)    2.78                48
 03/14/2023   06:44:48   (  70.17,  74.92) 03/14/2023   06:45:59  (  70.17,  75.02)    3.84                71
 03/14/2023   07:35:29   ( -70.02,-117.53) 03/14/2023   07:35:30  ( -70.00,-117.58)    2.82                 1
 03/14/2023   08:26:11   (  69.81,  50.10) 03/14/2023   08:24:58  (  69.83,  49.83)   10.45                73
 03/16/2023   23:01:40   (  70.11,-169.21) 03/16/2023   23:02:23  (  70.09,-169.19)    3.04                43
 03/16/2023   23:52:21   ( -69.96,  -1.66) 03/16/2023   23:51:53  ( -69.98,  -1.71)    2.76                28
 03/19/2023   14:28:00   ( -70.80, 138.17) 03/19/2023   14:29:09  ( -70.67, 139.93)   66.19                69
 03/19/2023   15:18:32   (  70.07, -53.37) 03/19/2023   15:18:45  (  70.06, -53.32)    2.23                13
 03/19/2023   16:09:14   ( -69.97, 114.10) 03/19/2023   16:08:15  ( -69.96, 114.17)    2.83                59