Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 24.  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)
 06/25/2025   22:11:53   ( -70.16,  23.25) 06/25/2025   22:12:46  ( -70.14,  23.26)    2.68                53
 06/25/2025   23:02:37   (  70.02,-169.23) 06/25/2025   23:02:13  (  70.04,-169.24)    2.40                24
 06/25/2025   23:53:04   ( -69.16,  -0.66) 06/25/2025   23:51:56  ( -69.21,  -2.73)   81.95                68
 06/28/2025   14:28:47   ( -70.08, 139.14) 06/28/2025   14:29:16  ( -70.09, 139.08)    2.96                29
 06/28/2025   15:19:32   (  69.99, -53.42) 06/28/2025   15:18:43  (  69.99, -53.43)    0.44                49
 07/01/2025   05:55:04   (  70.28,  87.28) 07/01/2025   05:56:15  (  70.25,  87.55)   10.83                71
 07/01/2025   06:45:44   ( -70.10,-105.13) 07/01/2025   06:45:46  ( -70.09,-105.05)    3.30                 2
 07/01/2025   07:36:27   (  69.91,  62.46) 07/01/2025   07:35:14  (  69.92,  62.36)    3.93                73
 07/03/2025   22:11:58   (  70.15,-156.76) 07/03/2025   22:12:46  (  70.17,-156.68)    3.40                48
 07/03/2025   23:02:39   ( -70.02,  10.76) 07/03/2025   23:02:17  ( -70.01,  10.73)    1.52                22
 07/06/2025   14:28:53   (  70.08, -40.89) 07/06/2025   14:29:17  (  70.08, -40.93)    1.89                24
 07/06/2025   15:19:35   ( -69.99, 126.56) 07/06/2025   15:18:47  ( -69.98, 126.56)    1.85                48