Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 3 13.  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)
 03/13/2025   22:11:50   (  70.45,-157.09) 03/13/2025   22:13:01  (  70.35,-156.52)   24.26                71
 03/13/2025   23:02:27   ( -70.10,  10.77) 03/13/2025   23:02:33  ( -70.12,  10.79)    2.18                 6
 03/13/2025   23:53:11   (  69.98, 178.26) 03/13/2025   23:52:01  (  69.96, 178.21)    2.86                70
 03/16/2025   14:28:39   (  70.16, -40.87) 03/16/2025   14:29:30  (  70.19, -40.87)    2.85                51
 03/16/2025   15:19:21   ( -70.07, 126.59) 03/16/2025   15:19:00  ( -70.07, 126.61)    0.86                21
 03/16/2025   16:09:49   (  69.10, -64.70) 03/16/2025   16:08:42  (  69.14, -67.02)   91.87                67
 03/19/2025   06:45:32   (  70.15,  74.92) 03/19/2025   06:45:55  (  70.14,  74.96)    1.60                23
 03/19/2025   07:36:14   ( -70.05,-117.61) 03/19/2025   07:35:25  ( -70.03,-117.57)    2.81                49
 03/21/2025   22:11:41   ( -70.19,  23.32) 03/21/2025   22:12:53  ( -70.20,  23.30)    1.83                72
 03/21/2025   23:02:25   (  70.09,-169.22) 03/21/2025   23:02:20  (  70.09,-169.22)    0.16                 5
 03/21/2025   23:53:04   ( -69.83,  -1.50) 03/21/2025   23:51:52  ( -69.87,  -1.89)   15.60                72
 03/24/2025   14:28:34   ( -70.14, 139.18) 03/24/2025   14:29:17  ( -70.16, 139.14)    2.89                43
 03/24/2025   15:19:18   (  70.04, -53.38) 03/24/2025   15:18:44  (  70.04, -53.38)    0.46                34