Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 7 7.  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)
 07/09/2025   05:55:06   ( -70.27, -92.71) 07/09/2025   05:56:18  ( -70.22, -92.49)   10.10                72
 07/09/2025   06:45:48   (  70.04,  74.96) 07/09/2025   06:45:46  (  70.06,  74.93)    2.68                 2
 07/09/2025   07:36:29   ( -69.90,-117.53) 07/09/2025   07:35:16  ( -69.95,-117.59)    5.50                73
 07/11/2025   22:11:59   ( -70.15,  23.24) 07/11/2025   22:12:47  ( -70.14,  23.29)    2.11                48
 07/11/2025   23:02:43   (  70.03,-169.27) 07/11/2025   23:02:14  (  70.04,-169.22)    2.16                29
 07/14/2025   13:38:27   (  70.97, -29.63) 07/14/2025   13:39:34  (  70.87, -27.37)   82.91                67
 07/14/2025   14:28:54   ( -70.09, 139.10) 07/14/2025   14:29:16  ( -70.11, 139.13)    3.02                22
 07/14/2025   15:19:38   (  69.97, -53.42) 07/14/2025   15:18:43  (  70.00, -53.38)    3.08                55
 07/17/2025   05:55:08   (  70.18,  87.41) 07/17/2025   05:56:15  (  70.16,  87.46)    2.99                67
 07/17/2025   06:45:50   ( -70.08,-105.12) 07/17/2025   06:45:45  ( -70.06,-105.05)    3.35                 5
 07/17/2025   07:36:28   (  69.65,  62.82) 07/17/2025   07:35:16  (  69.72,  62.13)   27.98                72
 07/19/2025   22:12:02   (  70.08,-156.67) 07/19/2025   22:12:44  (  70.09,-156.75)    3.32                42
 07/19/2025   23:02:45   ( -70.02,  10.73) 07/19/2025   23:02:14  ( -69.99,  10.75)    3.22                31