Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 26.  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)
 08/28/2025   22:12:01   ( -70.10,  23.30) 08/28/2025   22:13:12  ( -70.12,  23.23)    3.56                71
 08/28/2025   23:02:45   (  70.01,-169.25) 08/28/2025   23:02:39  (  70.02,-169.27)    1.52                 6
 08/28/2025   23:53:24   ( -69.74,  -1.52) 08/28/2025   23:52:11  ( -69.79,  -1.95)   17.59                73
 08/31/2025   14:28:55   ( -70.07, 139.12) 08/31/2025   14:29:41  ( -70.09, 139.08)    3.11                46
 08/31/2025   15:19:39   (  69.98, -53.43) 08/31/2025   15:19:08  (  69.99, -53.42)    1.51                31
 09/03/2025   05:55:21   (  70.89,  86.26) 09/03/2025   05:56:28  (  70.82,  88.41)   78.72                67
 09/03/2025   06:45:49   ( -70.05,-105.07) 09/03/2025   06:46:10  ( -70.05,-105.09)    1.10                21
 09/03/2025   07:36:33   (  69.95,  62.38) 09/03/2025   07:35:37  (  69.95,  62.40)    1.23                56
 09/05/2025   22:12:00   (  70.14,-156.75) 09/05/2025   22:13:07  (  70.15,-156.69)    2.89                67
 09/05/2025   23:02:42   ( -70.03,  10.73) 09/05/2025   23:02:37  ( -70.05,  10.79)    2.93                 5
 09/05/2025   23:53:20   (  69.62, 178.66) 09/05/2025   23:52:08  (  69.72, 177.97)   28.62                72
 09/08/2025   14:28:53   (  70.07, -40.88) 09/08/2025   14:29:36  (  70.07, -40.92)    1.62                43
 09/08/2025   15:19:35   ( -69.96, 126.61) 09/08/2025   15:19:06  ( -69.97, 126.57)    1.72                29