Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 5 19.  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)
 05/19/2024   06:44:16   (  70.43,  74.51) 05/19/2024   06:45:26  (  70.34,  75.21)   27.88                70
 05/19/2024   07:34:52   ( -70.03,-117.56) 05/19/2024   07:35:00  ( -70.01,-117.63)    3.40                 8
 05/19/2024   08:25:36   (  69.91,  49.93) 05/19/2024   08:24:27  (  69.91,  49.87)    2.42                69
 05/21/2024   23:01:01   (  70.16,-169.28) 05/21/2024   23:01:57  (  70.14,-169.20)    3.26                56
 05/21/2024   23:51:42   ( -70.02,  -1.75) 05/21/2024   23:51:27  ( -70.03,  -1.73)    1.25                15
 05/22/2024   00:42:14   (  69.27, 166.67) 05/22/2024   00:41:05  (  69.31, 164.94)   67.98                69
 05/24/2024   15:17:51   (  70.12, -53.42) 05/24/2024   15:18:25  (  70.09, -53.40)    3.37                34
 05/24/2024   16:08:32   ( -69.98, 114.11) 05/24/2024   16:07:55  ( -69.98, 114.08)    0.90                37
 05/27/2024   06:44:07   ( -70.73,-105.91) 05/27/2024   06:45:16  ( -70.63,-104.37)   57.96                69
 05/27/2024   07:34:41   (  70.10,  62.41) 05/27/2024   07:34:51  (  70.08,  62.47)    3.28                10
 05/27/2024   08:25:22   ( -69.96,-130.06) 05/27/2024   08:24:21  ( -69.97,-130.04)    1.26                61
 05/29/2024   23:00:46   ( -70.15,  10.81) 05/29/2024   23:01:49  ( -70.17,  10.85)    1.96                63
 05/29/2024   23:51:30   (  70.04, 178.29) 05/29/2024   23:51:16  (  70.05, 178.33)    1.60                14
 05/30/2024   00:42:04   ( -69.53, -13.63) 05/30/2024   00:40:53  ( -69.56, -14.72)   42.17                71
 06/01/2024   15:17:34   ( -70.12, 126.67) 06/01/2024   15:18:12  ( -70.13, 126.69)    1.70                38
 06/01/2024   16:08:18   (  70.01, -65.85) 06/01/2024   16:07:39  (  70.01, -65.83)    0.93                39