Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 24.  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)
 08/26/2025   05:55:23   ( -70.93, -93.80) 08/26/2025   05:56:30  ( -70.87, -91.54)   82.72                67
 08/26/2025   06:45:52   (  70.06,  74.90) 08/26/2025   06:46:10  (  70.06,  74.91)    0.48                18
 08/26/2025   07:36:34   ( -69.94,-117.61) 08/26/2025   07:35:40  ( -69.94,-117.62)    0.67                54
 08/28/2025   22:12:01   ( -70.11,  23.28) 08/28/2025   22:13:12  ( -70.10,  23.21)    2.86                71
 08/28/2025   23:02:45   (  70.02,-169.27) 08/28/2025   23:02:39  (  70.00,-169.29)    2.42                 6
 08/28/2025   23:53:24   ( -69.75,  -1.55) 08/28/2025   23:52:11  ( -69.78,  -1.97)   16.59                73
 08/31/2025   14:28:55   ( -70.08, 139.10) 08/31/2025   14:29:41  ( -70.09, 139.07)    1.22                46
 08/31/2025   15:19:39   (  69.99, -53.45) 08/31/2025   15:19:08  (  69.98, -53.43)    1.54                31
 09/03/2025   05:55:21   (  70.91,  86.24) 09/03/2025   05:56:28  (  70.82,  88.41)   79.70                67
 09/03/2025   06:45:49   ( -70.06,-105.09) 09/03/2025   06:46:10  ( -70.05,-105.09)    0.63                21
 09/03/2025   07:36:33   (  69.97,  62.36) 09/03/2025   07:35:37  (  69.94,  62.40)    3.20                56
 09/05/2025   22:12:00   (  70.10,-156.69) 09/05/2025   22:13:09  (  70.11,-156.76)    2.59                69
 09/05/2025   23:02:42   ( -69.99,  10.80) 09/05/2025   23:02:39  ( -70.00,  10.72)    3.24                 3
 09/05/2025   23:53:21   (  69.63, 178.64) 09/05/2025   23:52:09  (  69.72, 177.98)   27.28                72