Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 3 28.  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)
 03/29/2025   22:11:39   (  70.47,-157.09) 03/29/2025   22:12:50  (  70.39,-156.45)   25.41                71
 03/29/2025   23:02:16   ( -70.09,  10.80) 03/29/2025   23:02:23  ( -70.11,  10.78)    1.99                 7
 03/29/2025   23:53:00   (  70.00, 178.26) 03/29/2025   23:51:50  (  70.00, 178.28)    0.88                70
 04/01/2025   14:28:26   (  70.20, -40.90) 04/01/2025   14:29:20  (  70.20, -40.84)    2.21                54
 04/01/2025   15:19:08   ( -70.09, 126.59) 04/01/2025   15:18:50  ( -70.09, 126.63)    1.60                18
 04/01/2025   16:09:37   (  69.20, -64.80) 04/01/2025   16:08:30  (  69.26, -66.85)   80.96                67
 04/04/2025   06:45:16   (  70.17,  74.94) 04/04/2025   06:45:45  (  70.16,  75.00)    2.51                29
 04/04/2025   07:35:58   ( -70.05,-117.57) 04/04/2025   07:35:15  ( -70.06,-117.52)    2.01                43
 04/06/2025   22:11:29   ( -70.54,  22.82) 04/06/2025   22:12:40  ( -70.41,  23.60)   32.75                71
 04/06/2025   23:02:06   (  70.10,-169.17) 04/06/2025   23:02:10  (  70.13,-169.16)    2.81                 4
 04/06/2025   23:52:49   ( -70.03,  -1.75) 04/06/2025   23:51:40  ( -70.02,  -1.68)    3.00                69
 04/09/2025   14:28:13   ( -70.17, 139.19) 04/09/2025   14:29:07  ( -70.20, 139.20)    2.83                54
 04/09/2025   15:18:56   (  70.05, -53.31) 04/09/2025   15:18:34  (  70.08, -53.33)    3.20                22