Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 23.  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   ( -70.95, -93.83) 08/26/2025   05:56:30  ( -70.85, -91.56)   83.11                67
 08/26/2025   06:45:52   (  70.07,  74.88) 08/26/2025   06:46:10  (  70.04,  74.89)    3.09                18
 08/26/2025   07:36:34   ( -69.96,-117.63) 08/26/2025   07:35:40  ( -69.93,-117.64)    2.99                54
 08/28/2025   22:12:02   ( -70.13,  23.26) 08/28/2025   22:13:12  ( -70.15,  23.27)    2.32                70
 08/28/2025   23:02:46   (  70.04,-169.29) 08/28/2025   23:02:39  (  70.04,-169.23)    2.41                 7
 08/28/2025   23:53:24   ( -69.71,  -1.49) 08/28/2025   23:52:12  ( -69.77,  -1.99)   20.21                72
 08/31/2025   14:28:55   ( -70.09, 139.08) 08/31/2025   14:29:41  ( -70.08, 139.06)    2.20                46
 08/31/2025   15:19:38   (  69.95, -53.39) 08/31/2025   15:19:08  (  69.97, -53.45)    2.85                30
 09/03/2025   05:55:21   (  70.92,  86.22) 09/03/2025   05:56:28  (  70.81,  88.39)   80.14                67
 09/03/2025   06:45:49   ( -70.07,-105.10) 09/03/2025   06:46:10  ( -70.05,-105.10)    2.39                21
 09/03/2025   07:36:32   (  69.93,  62.42) 09/03/2025   07:35:37  (  69.94,  62.39)    1.69                55
 09/05/2025   22:12:00   (  70.11,-156.71) 09/05/2025   22:13:09  (  70.10,-156.77)    2.35                69
 09/05/2025   23:02:42   ( -69.99,  10.79) 09/05/2025   23:02:39  ( -70.00,  10.72)    2.72                 3
 09/05/2025   23:53:21   (  69.64, 178.62) 09/05/2025   23:52:09  (  69.72, 177.98)   26.68                72