Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 13.  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, -54.85) 11/14/2023   15:18:57  (  70.79, -52.27)   95.27                66
 11/14/2023   16:08:15   ( -69.88, 114.12) 11/14/2023   16:08:41  ( -69.90, 114.08)    3.30                26
 11/14/2023   16:59:00   (  69.82, -78.48) 11/14/2023   16:58:08  (  69.80, -78.42)    2.89                52
 11/17/2023   07:34:31   (  69.97,  62.42) 11/17/2023   07:35:40  (  69.96,  62.41)    1.43                69
 11/17/2023   08:25:13   ( -69.87,-130.11) 11/17/2023   08:25:10  ( -69.85,-130.11)    2.57                 3
 11/17/2023   09:15:52   (  69.50,  37.75) 11/17/2023   09:14:40  (  69.58,  37.16)   24.61                72
 11/19/2023   23:51:28   (  69.93, 178.25) 11/19/2023   23:52:08  (  69.93, 178.25)    0.27                40
 11/20/2023   00:42:10   ( -69.83, -14.28) 11/20/2023   00:41:38  ( -69.82, -14.26)    0.97                32
 11/22/2023   15:17:50   ( -70.53, 125.78) 11/22/2023   15:19:00  ( -70.41, 127.19)   54.16                70
 11/22/2023   16:08:24   (  69.90, -65.94) 11/22/2023   16:08:34  (  69.92, -65.87)    3.48                10
 11/22/2023   16:59:05   ( -69.74, 101.61) 11/22/2023   16:58:05  ( -69.76, 101.54)    3.53                60
 11/25/2023   07:34:36   ( -69.92,-117.52) 11/25/2023   07:35:35  ( -69.93,-117.60)    3.26                59
 11/25/2023   08:25:20   (  69.82,  49.93) 11/25/2023   08:25:02  (  69.82,  49.88)    1.98                18
 11/25/2023   09:15:51   ( -69.13,-141.75) 11/25/2023   09:14:42  ( -69.16,-143.36)   63.85                69