Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 8 12.  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)
 08/12/2024   14:28:35   ( -70.12, 139.10) 08/12/2024   14:29:09  ( -70.14, 139.14)    2.30                34
 08/12/2024   15:19:19   (  70.02, -53.43) 08/12/2024   15:18:36  (  70.04, -53.36)    3.40                43
 08/15/2024   05:54:54   (  70.58,  86.84) 08/15/2024   05:56:04  (  70.47,  87.88)   40.33                70
 08/15/2024   06:45:29   ( -70.11,-105.10) 08/15/2024   06:45:39  ( -70.09,-105.05)    2.72                10
 08/15/2024   07:36:12   (  69.95,  62.45) 08/15/2024   07:35:06  (  69.98,  62.45)    3.35                66
 08/17/2024   22:11:41   (  70.17,-156.73) 08/17/2024   22:12:38  (  70.18,-156.66)    2.76                57
 08/17/2024   23:02:23   ( -70.06,  10.75) 08/17/2024   23:02:08  ( -70.07,  10.82)    2.72                15
 08/17/2024   23:52:55   (  69.33, 179.14) 08/17/2024   23:51:46  (  69.35, 177.48)   65.46                69
 08/20/2024   14:28:34   (  70.10, -40.85) 08/20/2024   14:29:06  (  70.13, -40.83)    3.51                32
 08/20/2024   15:19:16   ( -69.99, 126.63) 08/20/2024   15:18:37  ( -69.97, 126.57)    3.23                39
 08/23/2024   05:54:51   ( -70.57, -93.12) 08/23/2024   05:56:01  ( -70.46, -92.11)   39.65                70
 08/23/2024   06:45:27   (  70.06,  75.00) 08/23/2024   06:45:33  (  70.07,  74.97)    1.02                 6
 08/23/2024   07:36:09   ( -69.95,-117.52) 08/23/2024   07:35:03  ( -69.96,-117.54)    1.50                66
 08/25/2024   22:11:35   ( -70.14,  23.35) 08/25/2024   22:12:30  ( -70.15,  23.35)    1.06                55
 08/25/2024   23:02:19   (  70.05,-169.20) 08/25/2024   23:01:57  (  70.03,-169.17)    2.39                22