Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 12.  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)   95.23                66
 11/14/2023   16:08:16   ( -69.93, 114.05) 11/14/2023   16:08:41  ( -69.91, 114.09)    2.30                25
 11/14/2023   16:59:00   (  69.82, -78.47) 11/14/2023   16:58:08  (  69.81, -78.41)    2.46                52
 11/17/2023   07:34:31   (  69.97,  62.43) 11/17/2023   07:35:40  (  69.97,  62.42)    0.30                69
 11/17/2023   08:25:13   ( -69.87,-130.10) 11/17/2023   08:25:10  ( -69.86,-130.10)    0.85                 3
 11/17/2023   09:15:52   (  69.49,  37.76) 11/17/2023   09:14:40  (  69.59,  37.17)   25.04                72
 11/19/2023   23:51:28   (  69.92, 178.26) 11/19/2023   23:52:08  (  69.94, 178.27)    1.79                40
 11/20/2023   00:42:10   ( -69.82, -14.27) 11/20/2023   00:41:38  ( -69.83, -14.25)    1.64                32
 11/22/2023   15:17:51   ( -70.57, 125.71) 11/22/2023   15:19:00  ( -70.43, 127.21)   57.85                69
 11/22/2023   16:08:24   (  69.89, -65.92) 11/22/2023   16:08:35  (  69.88, -65.93)    1.30                11
 11/22/2023   16:59:06   ( -69.78, 101.55) 11/22/2023   16:58:05  ( -69.77, 101.56)    0.97                61
 11/25/2023   07:34:37   ( -69.96,-117.58) 11/25/2023   07:35:35  ( -69.95,-117.58)    0.94                58
 11/25/2023   08:25:21   (  69.86,  49.88) 11/25/2023   08:25:02  (  69.83,  49.90)    3.07                19
 11/25/2023   09:15:51   ( -69.11,-141.73) 11/25/2023   09:14:42  ( -69.18,-143.34)   64.31                69