Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 22.  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   ( -70.42, -92.91) 06/23/2025   05:56:12  ( -70.33, -92.34)   23.34                71
 06/23/2025   06:45:41   (  70.06,  74.95) 06/23/2025   06:45:42  (  70.07,  74.92)    1.61                 1
 06/23/2025   07:36:22   ( -69.95,-117.56) 06/23/2025   07:35:12  ( -69.95,-117.60)    1.83                70
 06/25/2025   22:11:52   ( -70.12,  23.32) 06/25/2025   22:12:46  ( -70.13,  23.25)    2.86                54
 06/25/2025   23:02:37   (  70.03,-169.24) 06/25/2025   23:02:13  (  70.03,-169.25)    0.53                24
 06/25/2025   23:53:04   ( -69.17,  -0.67) 06/25/2025   23:51:56  ( -69.21,  -2.74)   81.86                68
 06/28/2025   14:28:48   ( -70.09, 139.13) 06/28/2025   14:29:17  ( -70.09, 139.07)    2.32                29
 06/28/2025   15:19:33   (  70.00, -53.43) 06/28/2025   15:18:44  (  69.98, -53.44)    2.54                49
 07/01/2025   05:55:04   (  70.29,  87.26) 07/01/2025   05:56:15  (  70.24,  87.53)   11.99                71
 07/01/2025   06:45:43   ( -70.06,-105.06) 07/01/2025   06:45:46  ( -70.08,-105.06)    2.44                 3
 07/01/2025   07:36:27   (  69.93,  62.44) 07/01/2025   07:35:14  (  69.91,  62.35)    3.88                73
 07/03/2025   22:11:57   (  70.12,-156.70) 07/03/2025   22:12:47  (  70.11,-156.78)    2.96                50
 07/03/2025   23:02:39   ( -70.03,  10.74) 07/03/2025   23:02:17  ( -70.01,  10.72)    3.21                22
 07/06/2025   14:28:53   (  70.10, -40.91) 07/06/2025   14:29:16  (  70.12, -40.87)    3.13                23
 07/06/2025   15:19:34   ( -69.96, 126.62) 07/06/2025   15:18:47  ( -69.97, 126.55)    2.90                47