Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 21.  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)
 06/23/2025   05:55:01   ( -70.39, -92.87) 06/23/2025   05:56:13  ( -70.31, -92.38)   20.31                72
 06/23/2025   06:45:42   (  70.08,  74.91) 06/23/2025   06:45:42  (  70.10,  74.96)    2.48                 0
 06/23/2025   07:36:23   ( -69.97,-117.60) 06/23/2025   07:35:12  ( -69.98,-117.56)    2.17                71
 06/25/2025   22:11:52   ( -70.14,  23.28) 06/25/2025   22:12:45  ( -70.16,  23.30)    2.61                53
 06/25/2025   23:02:37   (  70.05,-169.28) 06/25/2025   23:02:12  (  70.06,-169.21)    2.66                25
 06/25/2025   23:53:03   ( -69.14,  -0.63) 06/25/2025   23:51:56  ( -69.18,  -2.77)   84.91                67
 06/28/2025   14:28:48   ( -70.11, 139.09) 06/28/2025   14:29:16  ( -70.12, 139.11)    1.04                28
 06/28/2025   15:19:33   (  70.03, -53.47) 06/28/2025   15:18:43  (  70.01, -53.40)    3.43                50
 07/01/2025   05:55:04   (  70.26,  87.30) 07/01/2025   05:56:16  (  70.21,  87.49)    9.38                72
 07/01/2025   06:45:44   ( -70.08,-105.10) 07/01/2025   06:45:47  ( -70.06,-105.10)    2.86                 3
 07/01/2025   07:36:27   (  69.90,  62.49) 07/01/2025   07:35:14  (  69.94,  62.39)    6.12                73
 07/03/2025   22:11:58   (  70.14,-156.74) 07/03/2025   22:12:47  (  70.13,-156.74)    0.91                49
 07/03/2025   23:02:40   ( -70.06,  10.70) 07/03/2025   23:02:17  ( -70.03,  10.76)    3.14                23