Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 3 11.  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)
 03/11/2025   06:45:33   ( -70.14,-105.07) 03/11/2025   06:46:05  ( -70.17,-105.03)    2.94                32
 03/11/2025   07:36:17   (  70.02,  62.43) 03/11/2025   07:35:33  (  70.01,  62.39)    1.71                44
 03/13/2025   22:11:50   (  70.45,-157.09) 03/13/2025   22:13:01  (  70.36,-156.51)   24.25                71
 03/13/2025   23:02:27   ( -70.10,  10.77) 03/13/2025   23:02:34  ( -70.08,  10.73)    2.81                 7
 03/13/2025   23:53:11   (  69.98, 178.26) 03/13/2025   23:52:01  (  69.97, 178.22)    1.60                70
 03/16/2025   14:28:39   (  70.16, -40.87) 03/16/2025   14:29:31  (  70.17, -40.89)    1.34                52
 03/16/2025   15:19:21   ( -70.07, 126.59) 03/16/2025   15:19:01  ( -70.06, 126.59)    0.72                20
 03/16/2025   16:09:49   (  69.10, -64.70) 03/16/2025   16:08:42  (  69.18, -66.97)   90.09                67
 03/19/2025   06:45:32   (  70.15,  74.92) 03/19/2025   06:45:56  (  70.16,  74.99)    3.20                24
 03/19/2025   07:36:14   ( -70.04,-117.60) 03/19/2025   07:35:26  ( -70.06,-117.53)    3.09                48
 03/21/2025   22:11:43   ( -70.29,  23.16) 03/21/2025   22:12:55  ( -70.23,  23.33)    9.10                72
 03/21/2025   23:02:25   (  70.09,-169.22) 03/21/2025   23:02:22  (  70.12,-169.18)    3.34                 3
 03/21/2025   23:53:06   ( -69.93,  -1.66) 03/21/2025   23:51:53  ( -69.96,  -1.78)    5.57                73
 03/24/2025   14:28:34   ( -70.13, 139.18) 03/24/2025   14:29:21  ( -70.15, 139.11)    3.14                47
 03/24/2025   15:19:18   (  70.04, -53.37) 03/24/2025   15:18:48  (  70.03, -53.41)    2.07                30