Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 15.  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)
 11/17/2023   07:34:31   (  69.99,  62.39) 11/17/2023   07:35:39  (  70.00,  62.46)    2.65                68
 11/17/2023   08:25:13   ( -69.90,-130.14) 11/17/2023   08:25:09  ( -69.88,-130.07)    3.19                 4
 11/17/2023   09:15:52   (  69.52,  37.72) 11/17/2023   09:14:40  (  69.56,  37.13)   23.40                72
 11/19/2023   23:51:28   (  69.95, 178.22) 11/19/2023   23:52:08  (  69.92, 178.23)    3.38                40
 11/20/2023   00:42:09   ( -69.79, -14.23) 11/20/2023   00:41:38  ( -69.80, -14.29)    2.60                31
 11/22/2023   15:17:51   ( -70.54, 125.75) 11/22/2023   15:19:00  ( -70.46, 127.26)   56.65                69
 11/22/2023   16:08:25   (  69.91, -65.96) 11/22/2023   16:08:35  (  69.91, -65.88)    3.02                10
 11/22/2023   16:59:06   ( -69.75, 101.59) 11/22/2023   16:58:06  ( -69.75, 101.52)    2.55                60
 11/25/2023   07:34:37   ( -69.93,-117.54) 11/25/2023   07:35:36  ( -69.94,-117.60)    2.57                59
 11/25/2023   08:25:20   (  69.83,  49.93) 11/25/2023   08:25:02  (  69.83,  49.89)    1.39                18
 11/25/2023   09:15:51   ( -69.14,-141.77) 11/25/2023   09:14:42  ( -69.17,-143.36)   63.25                69
 11/27/2023   23:51:33   ( -69.91,  -1.74) 11/27/2023   23:52:02  ( -69.88,  -1.79)    3.39                29
 11/28/2023   00:42:17   (  69.81, 165.72) 11/28/2023   00:41:28  (  69.82, 165.77)    2.61                49