Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 25.  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   ( -70.97, -93.87) 08/26/2025   05:56:30  ( -70.83, -91.60)   83.98                67
 08/26/2025   06:45:51   (  70.04,  74.93) 08/26/2025   06:46:10  (  70.02,  74.85)    3.69                19
 08/26/2025   07:36:33   ( -69.93,-117.59) 08/26/2025   07:35:39  ( -69.96,-117.60)    3.38                54
 08/28/2025   22:12:01   ( -70.10,  23.30) 08/28/2025   22:13:12  ( -70.11,  23.22)    3.38                71
 08/28/2025   23:02:45   (  70.01,-169.25) 08/28/2025   23:02:39  (  70.01,-169.27)    1.08                 6
 08/28/2025   23:53:24   ( -69.74,  -1.53) 08/28/2025   23:52:11  ( -69.79,  -1.95)   17.49                73
 08/31/2025   14:28:55   ( -70.07, 139.12) 08/31/2025   14:29:41  ( -70.09, 139.08)    2.68                46
 08/31/2025   15:19:39   (  69.98, -53.43) 08/31/2025   15:19:08  (  69.99, -53.43)    0.71                31
 09/03/2025   05:55:21   (  70.90,  86.26) 09/03/2025   05:56:28  (  70.81,  88.40)   78.80                67
 09/03/2025   06:45:49   ( -70.05,-105.07) 09/03/2025   06:46:10  ( -70.05,-105.10)    0.93                21
 09/03/2025   07:36:33   (  69.96,  62.38) 09/03/2025   07:35:37  (  69.94,  62.40)    2.08                56
 09/05/2025   22:12:00   (  70.14,-156.76) 09/05/2025   22:13:07  (  70.15,-156.70)    2.36                67
 09/05/2025   23:02:42   ( -70.03,  10.73) 09/05/2025   23:02:37  ( -70.04,  10.78)    2.26                 5
 09/05/2025   23:53:20   (  69.62, 178.65) 09/05/2025   23:52:08  (  69.71, 177.96)   28.20                72
 09/08/2025   14:28:53   (  70.08, -40.89) 09/08/2025   14:29:36  (  70.06, -40.93)    2.33                43
 09/08/2025   15:19:35   ( -69.97, 126.60) 09/08/2025   15:19:06  ( -69.96, 126.56)    1.93                29