Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 5 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)
 05/16/2024   15:18:01   ( -70.06, 126.61) 05/16/2024   15:18:30  ( -70.08, 126.59)    2.66                29
 05/16/2024   16:08:46   (  69.99, -65.98) 05/16/2024   16:07:57  (  69.97, -65.91)    3.17                49
 05/19/2024   06:44:12   (  70.21,  74.84) 05/19/2024   06:45:24  (  70.19,  75.01)    6.86                72
 05/19/2024   07:34:52   ( -70.02,-117.55) 05/19/2024   07:34:55  ( -70.02,-117.60)    2.04                 3
 05/19/2024   08:25:35   (  69.85,  50.02) 05/19/2024   08:24:22  (  69.91,  49.89)    7.60                73
 05/21/2024   23:01:00   (  70.10,-169.18) 05/21/2024   23:01:47  (  70.11,-169.21)    1.39                47
 05/21/2024   23:51:42   ( -70.01,  -1.74) 05/21/2024   23:51:17  ( -70.00,  -1.73)    1.71                25
 05/24/2024   14:27:22   ( -71.00, 137.84) 05/24/2024   14:28:29  ( -70.90, 140.22)   87.28                67
 05/24/2024   15:17:50   (  70.05, -53.32) 05/24/2024   15:18:09  (  70.07, -53.35)    2.16                19
 05/24/2024   16:08:32   ( -69.97, 114.13) 05/24/2024   16:07:39  ( -69.96, 114.13)    0.60                53
 05/27/2024   06:43:56   ( -70.14,-104.97) 05/27/2024   06:45:03  ( -70.14,-104.99)    0.76                67
 05/27/2024   07:34:40   (  70.03,  62.51) 05/27/2024   07:34:30  (  70.02,  62.49)    1.53                10
 05/27/2024   08:25:16   ( -69.63,-129.57) 05/27/2024   08:24:04  ( -69.69,-130.33)   30.57                72