Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 1 17.  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)
 01/17/2024   15:17:58   (  70.74, -54.58) 01/17/2024   15:19:06  (  70.63, -52.55)   75.47                68
 01/17/2024   16:08:26   ( -69.93, 114.02) 01/17/2024   16:08:47  ( -69.91, 114.04)    1.70                21
 01/17/2024   16:59:10   (  69.80, -78.48) 01/17/2024   16:58:14  (  69.81, -78.46)    1.39                56
 01/20/2024   07:34:37   (  70.00,  62.38) 01/20/2024   07:35:45  (  70.02,  62.44)    3.36                68
 01/20/2024   08:25:18   ( -69.87,-130.10) 01/20/2024   08:25:16  ( -69.85,-130.16)    2.57                 2
 01/20/2024   09:15:58   (  69.53,  37.70) 01/20/2024   09:14:46  (  69.58,  37.11)   23.39                72
 01/22/2024   23:51:29   (  69.96, 178.23) 01/22/2024   23:52:13  (  69.97, 178.26)    2.28                44
 01/23/2024   00:42:11   ( -69.87, -14.33) 01/23/2024   00:41:43  ( -69.86, -14.26)    3.11                28
 01/25/2024   15:17:52   ( -70.88, 125.23) 01/25/2024   15:18:59  ( -70.76, 127.66)   89.72                67
 01/25/2024   16:08:20   (  69.93, -65.94) 01/25/2024   16:08:39  (  69.94, -65.89)    2.43                19
 01/25/2024   16:59:01   ( -69.79, 101.58) 01/25/2024   16:58:10  ( -69.78, 101.51)    2.86                51
 01/28/2024   07:34:27   ( -69.97,-117.54) 01/28/2024   07:35:39  ( -69.98,-117.59)    2.23                72
 01/28/2024   08:25:11   (  69.86,  49.95) 01/28/2024   08:25:06  (  69.87,  49.90)    2.09                 5
 01/28/2024   09:15:50   ( -69.61,-142.37) 01/28/2024   09:14:38  ( -69.65,-142.77)   15.79                72
 01/30/2024   23:51:19   ( -69.97,  -1.74) 01/30/2024   23:52:04  ( -69.98,  -1.69)    2.33                45
 01/31/2024   00:42:03   (  69.86, 165.74) 01/31/2024   00:41:31  (  69.86, 165.79)    2.24                32