Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 11.  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)
 04/11/2024   23:01:23   ( -70.05,  10.70) 04/11/2024   23:02:29  ( -70.07,  10.68)    2.35                66
 04/11/2024   23:52:07   (  69.95, 178.18) 04/11/2024   23:51:56  (  69.97, 178.17)    2.29                11
 04/12/2024   00:42:43   ( -69.53, -13.89) 04/12/2024   00:41:31  ( -69.58, -14.72)   32.80                72
 04/14/2024   15:18:19   ( -70.05, 126.48) 04/14/2024   15:18:56  ( -70.07, 126.55)    3.18                37
 04/14/2024   16:09:02   (  69.89, -65.97) 04/14/2024   16:08:24  (  69.90, -66.04)    2.72                38
 04/17/2024   06:44:38   (  70.48,  74.27) 04/17/2024   06:45:48  (  70.36,  75.22)   37.73                70
 04/17/2024   07:35:13   ( -70.00,-117.67) 04/17/2024   07:35:23  ( -69.98,-117.69)    2.87                10
 04/17/2024   08:25:56   (  69.85,  49.87) 04/17/2024   08:24:50  (  69.86,  49.80)    3.35                66
 04/19/2024   23:01:26   (  70.07,-169.32) 04/19/2024   23:02:19  (  70.08,-169.30)    1.02                53
 04/19/2024   23:52:08   ( -69.96,  -1.84) 04/19/2024   23:51:49  ( -69.97,  -1.81)    1.59                19
 04/20/2024   00:42:37   (  69.07, 166.77) 04/20/2024   00:41:30  (  69.08, 164.64)   84.72                67
 04/22/2024   15:18:21   (  70.04, -53.50) 04/22/2024   15:18:45  (  70.04, -53.45)    1.87                24
 04/22/2024   16:09:03   ( -69.94, 113.98) 04/22/2024   16:08:15  ( -69.94, 114.04)    2.46                48