Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 17.  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)
 06/17/2025   22:11:50   (  70.15,-156.72) 06/17/2025   22:12:40  (  70.13,-156.75)    3.05                50
 06/17/2025   23:02:31   ( -70.04,  10.76) 06/17/2025   23:02:09  ( -70.07,  10.80)    2.96                22
 06/20/2025   14:28:46   (  70.12, -40.91) 06/20/2025   14:29:11  (  70.12, -40.89)    0.72                25
 06/20/2025   15:19:27   ( -70.00, 126.59) 06/20/2025   15:18:41  ( -70.01, 126.59)    0.27                46
 06/23/2025   05:55:01   ( -70.39, -92.87) 06/23/2025   05:56:13  ( -70.30, -92.38)   20.31                72
 06/23/2025   06:45:42   (  70.09,  74.91) 06/23/2025   06:45:42  (  70.09,  74.95)    1.72                 0
 06/23/2025   07:36:23   ( -69.97,-117.60) 06/23/2025   07:35:12  ( -69.98,-117.57)    1.72                71
 06/25/2025   22:11:52   ( -70.15,  23.27) 06/25/2025   22:12:45  ( -70.15,  23.28)    0.39                53
 06/25/2025   23:02:37   (  70.06,-169.29) 06/25/2025   23:02:12  (  70.04,-169.24)    3.34                25
 06/25/2025   23:53:03   ( -69.14,  -0.64) 06/25/2025   23:51:55  ( -69.22,  -2.72)   82.77                68
 06/28/2025   14:28:48   ( -70.12, 139.08) 06/28/2025   14:29:15  ( -70.14, 139.15)    3.47                27
 06/28/2025   15:19:32   (  69.99, -53.42) 06/28/2025   15:18:43  (  69.97, -53.45)    2.36                49