Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 8.  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)
 06/09/2025   22:11:44   ( -70.18,  23.27) 06/09/2025   22:12:34  ( -70.15,  23.29)    3.06                50
 06/09/2025   23:02:28   (  70.03,-169.20) 06/09/2025   23:02:01  (  70.05,-169.20)    3.13                27
 06/09/2025   23:52:53   ( -69.07,  -0.49) 06/09/2025   23:51:46  ( -69.12,  -2.84)   93.56                67
 06/12/2025   13:38:15   (  71.13, -29.83) 06/12/2025   13:39:21  (  71.01, -27.17)   96.81                66
 06/12/2025   14:28:39   ( -70.12, 139.12) 06/12/2025   14:29:05  ( -70.14, 139.15)    2.24                26
 06/12/2025   15:19:23   (  69.97, -53.35) 06/12/2025   15:18:33  (  69.98, -53.43)    3.10                50
 06/15/2025   05:54:55   (  70.24,  87.38) 06/15/2025   05:56:07  (  70.21,  87.49)    5.47                72
 06/15/2025   06:45:35   ( -70.07,-105.04) 06/15/2025   06:45:37  ( -70.10,-105.03)    3.29                 2
 06/15/2025   07:36:18   (  69.87,  62.56) 06/15/2025   07:35:06  (  69.88,  62.31)    9.86                72
 06/17/2025   22:11:50   (  70.14,-156.71) 06/17/2025   22:12:39  (  70.14,-156.73)    0.98                49
 06/17/2025   23:02:31   ( -70.02,  10.79) 06/17/2025   23:02:09  ( -70.03,  10.76)    2.03                22
 06/20/2025   14:28:46   (  70.10, -40.88) 06/20/2025   14:29:10  (  70.10, -40.91)    0.99                24
 06/20/2025   15:19:27   ( -69.98, 126.62) 06/20/2025   15:18:40  ( -70.00, 126.58)    2.78                47