Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 3 16.  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)
 03/16/2023   23:01:40   (  70.13,-169.25) 03/16/2023   23:02:38  (  70.15,-169.17)    3.51                58
 03/16/2023   23:52:21   ( -69.99,  -1.71) 03/16/2023   23:52:09  ( -69.99,  -1.77)    2.31                12
 03/17/2023   00:42:54   (  69.29, 166.62) 03/17/2023   00:41:45  (  69.38, 165.05)   62.26                69
 03/19/2023   15:18:32   (  70.09, -53.40) 03/19/2023   15:19:07  (  70.09, -53.38)    0.88                35
 03/19/2023   16:09:14   ( -70.00, 114.05) 03/19/2023   16:08:37  ( -69.98, 114.10)    2.74                37
 03/22/2023   06:44:50   ( -70.69,-105.89) 03/22/2023   06:46:00  ( -70.58,-104.43)   55.17                70
 03/22/2023   07:35:24   (  70.06,  62.42) 03/22/2023   07:35:35  (  70.03,  62.42)    3.46                11
 03/22/2023   08:26:05   ( -69.91,-130.04) 03/22/2023   08:25:05  ( -69.92,-130.10)    2.33                60
 03/24/2023   23:01:32   ( -70.15,  10.75) 03/24/2023   23:02:34  ( -70.15,  10.83)    2.95                62
 03/24/2023   23:52:15   (  69.99, 178.30) 03/24/2023   23:52:02  (  69.98, 178.23)    3.03                13
 03/25/2023   00:42:49   ( -69.47, -13.62) 03/25/2023   00:41:38  ( -69.54, -14.73)   44.03                71
 03/27/2023   15:18:22   ( -70.09, 126.61) 03/27/2023   15:18:59  ( -70.10, 126.66)    2.07                37
 03/27/2023   16:09:06   (  69.99, -65.92) 03/27/2023   16:08:26  (  69.99, -65.87)    2.19                40