Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 18.  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)
 04/19/2024   23:01:25   (  70.06,-169.30) 04/19/2024   23:02:17  (  70.07,-169.30)    1.23                52
 04/19/2024   23:52:07   ( -69.96,  -1.83) 04/19/2024   23:51:47  ( -69.96,  -1.83)    0.54                20
 04/20/2024   00:42:35   (  69.00, 166.86) 04/20/2024   00:41:28  (  69.07, 164.63)   89.22                67
 04/22/2024   14:27:53   ( -71.05, 137.57) 04/22/2024   14:28:59  ( -70.97, 140.29)   98.83                66
 04/22/2024   15:18:20   (  70.06, -53.52) 04/22/2024   15:18:41  (  70.04, -53.45)    3.53                21
 04/22/2024   16:09:01   ( -69.91, 114.03) 04/22/2024   16:08:11  ( -69.93, 114.03)    2.39                50
 04/25/2024   06:44:30   ( -70.13,-105.16) 04/25/2024   06:45:37  ( -70.12,-105.08)    3.12                67
 04/25/2024   07:35:13   (  69.97,  62.39) 04/25/2024   07:35:04  (  70.00,  62.40)    3.20                 9
 04/25/2024   08:25:50   ( -69.61,-129.75) 04/25/2024   08:24:38  ( -69.67,-130.42)   26.99                72
 04/27/2024   23:01:23   ( -70.06,  10.73) 04/27/2024   23:01:59  ( -70.07,  10.77)    2.36                36
 04/27/2024   23:52:07   (  69.95, 178.20) 04/27/2024   23:51:26  (  69.95, 178.24)    1.81                41
 04/30/2024   14:27:36   (  70.27, -41.13) 04/30/2024   14:28:48  (  70.18, -40.80)   15.43                72
 04/30/2024   15:18:15   ( -70.00, 126.59) 04/30/2024   15:18:19  ( -70.02, 126.61)    2.25                 4
 04/30/2024   16:08:59   (  69.90, -65.95) 04/30/2024   16:07:46  (  69.90, -65.92)    1.11                73