Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 14.  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)
 11/14/2023   15:17:51   (  70.92, -54.84) 11/14/2023   15:18:57  (  70.79, -52.26)   95.03                66
 11/14/2023   16:08:16   ( -69.93, 114.05) 11/14/2023   16:08:41  ( -69.91, 114.08)    2.45                25
 11/14/2023   16:59:00   (  69.81, -78.47) 11/14/2023   16:58:08  (  69.81, -78.41)    2.20                52
 11/17/2023   07:34:31   (  69.97,  62.43) 11/17/2023   07:35:40  (  69.97,  62.42)    0.48                69
 11/17/2023   08:25:13   ( -69.87,-130.10) 11/17/2023   08:25:10  ( -69.86,-130.11)    1.61                 3
 11/17/2023   09:15:52   (  69.49,  37.76) 11/17/2023   09:14:40  (  69.58,  37.17)   25.11                72
 11/19/2023   23:51:27   (  69.93, 178.26) 11/19/2023   23:52:07  (  69.94, 178.26)    1.12                40
 11/20/2023   00:42:09   ( -69.82, -14.27) 11/20/2023   00:41:37  ( -69.83, -14.26)    0.68                32
 11/22/2023   15:17:50   ( -70.52, 125.78) 11/22/2023   15:19:00  ( -70.42, 127.20)   53.98                70
 11/22/2023   16:08:24   (  69.89, -65.93) 11/22/2023   16:08:35  (  69.87, -65.94)    2.37                11
 11/22/2023   16:59:06   ( -69.79, 101.54) 11/22/2023   16:58:05  ( -69.76, 101.55)    2.57                61
 11/25/2023   07:34:37   ( -69.97,-117.60) 11/25/2023   07:35:35  ( -69.94,-117.59)    2.89                58
 11/25/2023   08:25:20   (  69.82,  49.94) 11/25/2023   08:25:02  (  69.83,  49.90)    2.29                18
 11/25/2023   09:15:51   ( -69.13,-141.75) 11/25/2023   09:14:42  ( -69.17,-143.35)   63.74                69
 11/27/2023   23:51:33   ( -69.90,  -1.73) 11/27/2023   23:52:01  ( -69.93,  -1.72)    3.03                28
 11/28/2023   00:42:17   (  69.80, 165.72) 11/28/2023   00:41:28  (  69.81, 165.77)    1.85                49