Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 3 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)
 03/24/2025   14:28:33   ( -70.20, 139.09) 03/24/2025   14:29:26  ( -70.17, 139.11)    2.69                53
 03/24/2025   15:19:16   (  70.04, -53.37) 03/24/2025   15:18:53  (  70.07, -53.39)    3.02                23
 03/24/2025   16:09:44   ( -69.20, 115.18) 03/24/2025   16:08:36  ( -69.24, 113.12)   81.33                68
 03/27/2025   06:45:25   ( -70.15,-105.06) 03/27/2025   06:45:56  ( -70.14,-105.06)    0.94                31
 03/27/2025   07:36:09   (  70.06,  62.39) 03/27/2025   07:35:23  (  70.03,  62.43)    3.12                46
 03/29/2025   22:11:40   (  70.50,-157.15) 03/29/2025   22:12:51  (  70.42,-156.40)   29.24                71
 03/29/2025   23:02:17   ( -70.12,  10.76) 03/29/2025   23:02:25  ( -70.10,  10.76)    2.99                 8
 03/29/2025   23:53:00   (  69.99, 178.28) 03/29/2025   23:51:52  (  69.98, 178.25)    1.27                68
 04/01/2025   14:28:26   (  70.19, -40.88) 04/01/2025   14:29:22  (  70.20, -40.84)    1.84                56
 04/01/2025   15:19:08   ( -70.07, 126.62) 04/01/2025   15:18:52  ( -70.10, 126.64)    3.32                16
 04/01/2025   16:09:38   (  69.30, -64.93) 04/01/2025   16:08:30  (  69.32, -66.78)   72.48                68
 04/04/2025   06:45:16   (  70.16,  74.95) 04/04/2025   06:45:48  (  70.13,  74.95)    2.98                32
 04/04/2025   07:35:58   ( -70.03,-117.54) 04/04/2025   07:35:18  ( -70.03,-117.56)    0.86                40